Puberty (Simple English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Puberty" in Simple English language version.

Last modified: 10:42:39, 7 August 2026 (UTC)

Ref.Un. Ref.Website

Global rank Simple English rank

1717nih.gov

5^th place

1312doi.org

2^nd place

77web.archive.org

1^st place

76archive.org

6^th place

3^rd place

33worldcat.org

4^th place

6^th place

22pamf.org

low place

6,292^nd place

22adsabs.harvard.edu

14^th place

17^th place

22semanticscholar.org

15^th place

11^th place

11kidshealth.org

low place

1,591^st place

11vstudentworld.yolasite.com

low place

11theworld.org

5,753^rd place

6,387^th place

11telegraph.co.uk

40^th place

35^th place

11mum.org

low place

11bbc.co.uk

11^th place

9^th place

11newscientist.com

1,041^st place

477^th place

11womensenews.org

low place

8,653^rd place

11center4research.org

low place

11howstuffworks.com

1,354^th place

397^th place

11associatedcontent.com

low place

4,962^nd place

11sil.org

3,204^th place

2,044^th place

11ghanaweb.com

1,750^th place

962^nd place

11msu.edu

1,979^th place

1,383^rd place

adsabs.harvard.edu (Global: 14^th place; Simple English: 17^th place)

ui.adsabs.harvard.edu

Anderson SE; Dallal GE; Must A (2003). "Relative weight and race influence average age at menarche: results from two nationally representative surveys of US girls studied 25 years apart". Pediatrics. 111 (4 Pt 1): 844–50. Bibcode:2003Pedia.111..844A. doi:10.1542/peds.111.4.844. PMID 12671122.
Guillette EA; et al. (2006). "Altered breast development in young girls from an agricultural environment". Environ. Health Perspect. 114 (3): 471–5. Bibcode:2006EnvHP.114..471G. doi:10.1289/ehp.8280. PMC 1392245. PMID 16507474.

archive.org (Global: 6^th place; Simple English: 3^rd place)

Anderson SE; Dallal GE; Must A (2003). "Relative weight and race influence average age at menarche: results from two nationally representative surveys of US girls studied 25 years apart". Pediatrics. 111 (4 Pt 1): 844–50. Bibcode:2003Pedia.111..844A. doi:10.1542/peds.111.4.844. PMID 12671122.
Ann Byers (2007). "How Do Boys' Bodies Change during Puberty?". Frequently Asked Questions about Puberty. New York, N.Y.: Rosen Publishing. pp. 16–25 at 16. ISBN 978-1-4042-0966-4.
Guillette EA; et al. (2006). "Altered breast development in young girls from an agricultural environment". Environ. Health Perspect. 114 (3): 471–5. Bibcode:2006EnvHP.114..471G. doi:10.1289/ehp.8280. PMC 1392245. PMID 16507474.
Xiaojia Ge; Misaki N. Natsuaki; Jenae M. Neiderhiser; David Reiss (2007). "Genetic and environmental influences on pubertal timing: results from two national sibling studies". Journal of Research on Adolescence. 17 (4): 767–788. doi:10.1111/j.1532-7795.2007.00546.x.
S.A. Treloar; N.G. Martin (July 1990). "Age at menarche as a fitness trait: nonadditive genetic variance detected in a large twin sample". American Journal of Human Genetics. 47 (1): 137–148. PMC 1683767. PMID 2349942. Kaprio J.; et al. (October 1995). "Common genetic influences on BMI and Age at Menarche". Human Biology. 67 (5): 739–753. PMID 8543288. D.E. Comings; D. Muhleman, J.P. Johnson and J.P. MacMurray (2002). "Parent–daughter transmission of the androgen receptor gene as an explanation of the effect of father absence on age of menarche". Child Development. 73 (4): 1046–1051. doi:10.1111/1467-8624.00456. PMID 12146732. B.S. Mustanski; et al. (November 2004). "Genetic and environmental influences on pubertal development: longitudinal data from Finnish twins at ages 11 and 14". Developmental Psychology. 40 (6): 1188–1198. doi:10.1037/0012-1649.40.6.1188. PMID 15535766.
Harry Finley (2003). "Average Age at Menarche in Various Cultures". Museum of Menstruation and Women's Health. Retrieved 25 November 2008. P.H. Whincup; J.A. Gilg; K. Odoki; S.J.C. Taylor; D.G. Cook (5 May 2001). "Age of Menarche in Contemporary British Teenagers: Survey of Girls Born between 1982 and 1986". British Medical Journal. 322 (7294): 1095–1096. doi:10.1136/bmj.322.7294.1095. PMC 31261. PMID 11337438. "Girls maturing slightly earlier". BBC News. 3 May 2001.

associatedcontent.com (Global: low place; Simple English: 4,962^nd place)

L.K. Smith (29 December 2006). "Native American Culture Perspectives – Kinaalda: The Navajo Puberty Ritual". Associated Content. Archived from the original on 25 May 2008. Retrieved 2 May 2010.

bbc.co.uk (Global: 11^th place; Simple English: 9^th place)

news.bbc.co.uk

Harry Finley (2003). "Average Age at Menarche in Various Cultures". Museum of Menstruation and Women's Health. Retrieved 25 November 2008. P.H. Whincup; J.A. Gilg; K. Odoki; S.J.C. Taylor; D.G. Cook (5 May 2001). "Age of Menarche in Contemporary British Teenagers: Survey of Girls Born between 1982 and 1986". British Medical Journal. 322 (7294): 1095–1096. doi:10.1136/bmj.322.7294.1095. PMC 31261. PMID 11337438. "Girls maturing slightly earlier". BBC News. 3 May 2001.

center4research.org (Global: low place; Simple English: low place)

Diana Zuckerman; Paul Brown, Laura Walls (July 2008). "Are Bisphenol A (BPA) plastic products safe for infants and children?". National Research Center for Women & Families. Archived from the original on 27 August 2008. Retrieved 26 November 2008.

doi.org (Global: 2^nd place; Simple English: 2^nd place)

T.M. Plant (January 2001). "Leptin, Growth Hormone, and the Onset of Primate Puberty". J. Clin. Endocrinol. Metab. 86 (1): 458–460. doi:10.1210/jc.86.1.459. ISSN 0021-972X. PMID 11232044.
Al Alwan, Ibrahim; Felimban, Naila; Altwaijri, Yasmin; Tamim, Hani; Al Mutair, Angham; Shoukri, Mohamed; Tamimi, Waleed (2010). "Puberty onset among boys in riyadh, saudi arabia". Clinical Medicine Insights. Pediatrics. 4 CMPed.S4610: 19–24. doi:10.4137/cmped.s4610. ISSN 1179-5565. PMC 3666985. PMID 23761992.
Felimban, Naila; Jawdat, Dunia; Al-Twaijri, Yasmin; Al-Mutair, Angham; Tamimi, Waleed; Shoukri, Mohamed; Tamim, Hani; Al-Alwan, Ibrahim (July 2013). "Pubertal characteristics among schoolgirls in Riyadh, Saudi Arabia". European Journal of Pediatrics. 172 (7): 971–975. doi:10.1007/s00431-012-1752-2. ISSN 1432-1076. PMID 23640021.
Anderson SE; Dallal GE; Must A (2003). "Relative weight and race influence average age at menarche: results from two nationally representative surveys of US girls studied 25 years apart". Pediatrics. 111 (4 Pt 1): 844–50. Bibcode:2003Pedia.111..844A. doi:10.1542/peds.111.4.844. PMID 12671122.
Al-Sahab B; Ardern CI; Hamadeh MJ; Tamim H (2010). "Age at menarche in Canada: results from the National Longitudinal Survey of Children & Youth". BMC Public Health. 10 736. doi:10.1186/1471-2458-10-736. PMC 3001737. PMID 21110899.
Guillette EA; et al. (2006). "Altered breast development in young girls from an agricultural environment". Environ. Health Perspect. 114 (3): 471–5. Bibcode:2006EnvHP.114..471G. doi:10.1289/ehp.8280. PMC 1392245. PMID 16507474.
Buck L.G.M.; et al. (February 2008). "Environmental factors and puberty timing: expert panel research needs". Pediatrics. 121 (Suppl 3): S192–207. doi:10.1542/peds.1813E. PMID 18245512. S2CID 9375302.
Mouritsen A; et al. (April 2010). "Hypothesis: exposure to endocrine-disrupting chemicals may interfere with timing of puberty". Int. J. Androl. 33 (2): 346–59. doi:10.1111/j.1365-2605.2010.01051.x. PMID 20487042.
Xiaojia Ge; Misaki N. Natsuaki; Jenae M. Neiderhiser; David Reiss (2007). "Genetic and environmental influences on pubertal timing: results from two national sibling studies". Journal of Research on Adolescence. 17 (4): 767–788. doi:10.1111/j.1532-7795.2007.00546.x.
S.A. Treloar; N.G. Martin (July 1990). "Age at menarche as a fitness trait: nonadditive genetic variance detected in a large twin sample". American Journal of Human Genetics. 47 (1): 137–148. PMC 1683767. PMID 2349942. Kaprio J.; et al. (October 1995). "Common genetic influences on BMI and Age at Menarche". Human Biology. 67 (5): 739–753. PMID 8543288. D.E. Comings; D. Muhleman, J.P. Johnson and J.P. MacMurray (2002). "Parent–daughter transmission of the androgen receptor gene as an explanation of the effect of father absence on age of menarche". Child Development. 73 (4): 1046–1051. doi:10.1111/1467-8624.00456. PMID 12146732. B.S. Mustanski; et al. (November 2004). "Genetic and environmental influences on pubertal development: longitudinal data from Finnish twins at ages 11 and 14". Developmental Psychology. 40 (6): 1188–1198. doi:10.1037/0012-1649.40.6.1188. PMID 15535766.
Harry Finley (2003). "Average Age at Menarche in Various Cultures". Museum of Menstruation and Women's Health. Retrieved 25 November 2008. P.H. Whincup; J.A. Gilg; K. Odoki; S.J.C. Taylor; D.G. Cook (5 May 2001). "Age of Menarche in Contemporary British Teenagers: Survey of Girls Born between 1982 and 1986". British Medical Journal. 322 (7294): 1095–1096. doi:10.1136/bmj.322.7294.1095. PMC 31261. PMID 11337438. "Girls maturing slightly earlier". BBC News. 3 May 2001.
V. Abbassi (1998). "Growth and Normal Puberty". Pediatrics. 102 (2 pt 3): 507–511. doi:10.1542/peds.102.S3.507. PMID 9685454. S2CID 24733669.

ghanaweb.com (Global: 1,750^th place; Simple English: 962^nd place)

David Osei-Adu. "Puberty rites". GhanaWeb. Retrieved 2 May 2010. Christine Opping (1973). "Notes on Cultural Aspects of Menstruation in Ghana" (PDF). Institute of African Studies Research Review. 9 (2).

howstuffworks.com (Global: 1,354^th place; Simple English: 397^th place)

health.howstuffworks.com

Tom Scheve (10 March 2009). "Puberty rites around the world". How Stuff Works. Retrieved 2 May 2010.

kidshealth.org (Global: low place; Simple English: 1,591^st place)

Steven Dowshen (reviewer) (April 2007). "Everything you wanted to know about puberty". TeensHealth, The Nemours Foundation's Center for Children's Health Media. Retrieved 29 November 2008.

msu.edu (Global: 1,979^th place; Simple English: 1,383^rd place)

archive.lib.msu.edu

David Osei-Adu. "Puberty rites". GhanaWeb. Retrieved 2 May 2010. Christine Opping (1973). "Notes on Cultural Aspects of Menstruation in Ghana" (PDF). Institute of African Studies Research Review. 9 (2).

mum.org (Global: low place; Simple English: low place)

Harry Finley (2003). "Average Age at Menarche in Various Cultures". Museum of Menstruation and Women's Health. Retrieved 25 November 2008. P.H. Whincup; J.A. Gilg; K. Odoki; S.J.C. Taylor; D.G. Cook (5 May 2001). "Age of Menarche in Contemporary British Teenagers: Survey of Girls Born between 1982 and 1986". British Medical Journal. 322 (7294): 1095–1096. doi:10.1136/bmj.322.7294.1095. PMC 31261. PMID 11337438. "Girls maturing slightly earlier". BBC News. 3 May 2001.

newscientist.com (Global: 1,041^st place; Simple English: 477^th place)

Phil McKenna (5 March 2007). "Childhood obesity brings early puberty for girls". New Scientist. Retrieved 26 November 2008.

nih.gov (Global: 5^th place; Simple English: 5^th place)

pubmed.ncbi.nlm.nih.gov

T.M. Plant (January 2001). "Leptin, Growth Hormone, and the Onset of Primate Puberty". J. Clin. Endocrinol. Metab. 86 (1): 458–460. doi:10.1210/jc.86.1.459. ISSN 0021-972X. PMID 11232044.
Al Alwan, Ibrahim; Felimban, Naila; Altwaijri, Yasmin; Tamim, Hani; Al Mutair, Angham; Shoukri, Mohamed; Tamimi, Waleed (2010). "Puberty onset among boys in riyadh, saudi arabia". Clinical Medicine Insights. Pediatrics. 4 CMPed.S4610: 19–24. doi:10.4137/cmped.s4610. ISSN 1179-5565. PMC 3666985. PMID 23761992.
Felimban, Naila; Jawdat, Dunia; Al-Twaijri, Yasmin; Al-Mutair, Angham; Tamimi, Waleed; Shoukri, Mohamed; Tamim, Hani; Al-Alwan, Ibrahim (July 2013). "Pubertal characteristics among schoolgirls in Riyadh, Saudi Arabia". European Journal of Pediatrics. 172 (7): 971–975. doi:10.1007/s00431-012-1752-2. ISSN 1432-1076. PMID 23640021.
Anderson SE; Dallal GE; Must A (2003). "Relative weight and race influence average age at menarche: results from two nationally representative surveys of US girls studied 25 years apart". Pediatrics. 111 (4 Pt 1): 844–50. Bibcode:2003Pedia.111..844A. doi:10.1542/peds.111.4.844. PMID 12671122.
Al-Sahab B; Ardern CI; Hamadeh MJ; Tamim H (2010). "Age at menarche in Canada: results from the National Longitudinal Survey of Children & Youth". BMC Public Health. 10 736. doi:10.1186/1471-2458-10-736. PMC 3001737. PMID 21110899.
Guillette EA; et al. (2006). "Altered breast development in young girls from an agricultural environment". Environ. Health Perspect. 114 (3): 471–5. Bibcode:2006EnvHP.114..471G. doi:10.1289/ehp.8280. PMC 1392245. PMID 16507474.
Buck L.G.M.; et al. (February 2008). "Environmental factors and puberty timing: expert panel research needs". Pediatrics. 121 (Suppl 3): S192–207. doi:10.1542/peds.1813E. PMID 18245512. S2CID 9375302.
Mouritsen A; et al. (April 2010). "Hypothesis: exposure to endocrine-disrupting chemicals may interfere with timing of puberty". Int. J. Androl. 33 (2): 346–59. doi:10.1111/j.1365-2605.2010.01051.x. PMID 20487042.
S.A. Treloar; N.G. Martin (July 1990). "Age at menarche as a fitness trait: nonadditive genetic variance detected in a large twin sample". American Journal of Human Genetics. 47 (1): 137–148. PMC 1683767. PMID 2349942. Kaprio J.; et al. (October 1995). "Common genetic influences on BMI and Age at Menarche". Human Biology. 67 (5): 739–753. PMID 8543288. D.E. Comings; D. Muhleman, J.P. Johnson and J.P. MacMurray (2002). "Parent–daughter transmission of the androgen receptor gene as an explanation of the effect of father absence on age of menarche". Child Development. 73 (4): 1046–1051. doi:10.1111/1467-8624.00456. PMID 12146732. B.S. Mustanski; et al. (November 2004). "Genetic and environmental influences on pubertal development: longitudinal data from Finnish twins at ages 11 and 14". Developmental Psychology. 40 (6): 1188–1198. doi:10.1037/0012-1649.40.6.1188. PMID 15535766.
Harry Finley (2003). "Average Age at Menarche in Various Cultures". Museum of Menstruation and Women's Health. Retrieved 25 November 2008. P.H. Whincup; J.A. Gilg; K. Odoki; S.J.C. Taylor; D.G. Cook (5 May 2001). "Age of Menarche in Contemporary British Teenagers: Survey of Girls Born between 1982 and 1986". British Medical Journal. 322 (7294): 1095–1096. doi:10.1136/bmj.322.7294.1095. PMC 31261. PMID 11337438. "Girls maturing slightly earlier". BBC News. 3 May 2001.
V. Abbassi (1998). "Growth and Normal Puberty". Pediatrics. 102 (2 pt 3): 507–511. doi:10.1542/peds.102.S3.507. PMID 9685454. S2CID 24733669.

ncbi.nlm.nih.gov

Al Alwan, Ibrahim; Felimban, Naila; Altwaijri, Yasmin; Tamim, Hani; Al Mutair, Angham; Shoukri, Mohamed; Tamimi, Waleed (2010). "Puberty onset among boys in riyadh, saudi arabia". Clinical Medicine Insights. Pediatrics. 4 CMPed.S4610: 19–24. doi:10.4137/cmped.s4610. ISSN 1179-5565. PMC 3666985. PMID 23761992.
Al-Sahab B; Ardern CI; Hamadeh MJ; Tamim H (2010). "Age at menarche in Canada: results from the National Longitudinal Survey of Children & Youth". BMC Public Health. 10 736. doi:10.1186/1471-2458-10-736. PMC 3001737. PMID 21110899.
Guillette EA; et al. (2006). "Altered breast development in young girls from an agricultural environment". Environ. Health Perspect. 114 (3): 471–5. Bibcode:2006EnvHP.114..471G. doi:10.1289/ehp.8280. PMC 1392245. PMID 16507474.
S.A. Treloar; N.G. Martin (July 1990). "Age at menarche as a fitness trait: nonadditive genetic variance detected in a large twin sample". American Journal of Human Genetics. 47 (1): 137–148. PMC 1683767. PMID 2349942. Kaprio J.; et al. (October 1995). "Common genetic influences on BMI and Age at Menarche". Human Biology. 67 (5): 739–753. PMID 8543288. D.E. Comings; D. Muhleman, J.P. Johnson and J.P. MacMurray (2002). "Parent–daughter transmission of the androgen receptor gene as an explanation of the effect of father absence on age of menarche". Child Development. 73 (4): 1046–1051. doi:10.1111/1467-8624.00456. PMID 12146732. B.S. Mustanski; et al. (November 2004). "Genetic and environmental influences on pubertal development: longitudinal data from Finnish twins at ages 11 and 14". Developmental Psychology. 40 (6): 1188–1198. doi:10.1037/0012-1649.40.6.1188. PMID 15535766.
Harry Finley (2003). "Average Age at Menarche in Various Cultures". Museum of Menstruation and Women's Health. Retrieved 25 November 2008. P.H. Whincup; J.A. Gilg; K. Odoki; S.J.C. Taylor; D.G. Cook (5 May 2001). "Age of Menarche in Contemporary British Teenagers: Survey of Girls Born between 1982 and 1986". British Medical Journal. 322 (7294): 1095–1096. doi:10.1136/bmj.322.7294.1095. PMC 31261. PMID 11337438. "Girls maturing slightly earlier". BBC News. 3 May 2001.

nlm.nih.gov

"Puberty and adolescence". Retrieved July 5, 2009.

pamf.org (Global: low place; Simple English: 6,292^nd place)

"Teenage Growth & Development: 11 to 14 Years". pamf.org. Archived from the original on 2013-07-03. Retrieved 2013-02-09.
"Teenage Growth & Development: 15 to 17 Years". pamf.org. Archived from the original on 2009-02-26. Retrieved 2013-02-09.

semanticscholar.org (Global: 15^th place; Simple English: 11^th place)

api.semanticscholar.org

Buck L.G.M.; et al. (February 2008). "Environmental factors and puberty timing: expert panel research needs". Pediatrics. 121 (Suppl 3): S192–207. doi:10.1542/peds.1813E. PMID 18245512. S2CID 9375302.
V. Abbassi (1998). "Growth and Normal Puberty". Pediatrics. 102 (2 pt 3): 507–511. doi:10.1542/peds.102.S3.507. PMID 9685454. S2CID 24733669.

sil.org (Global: 3,204^th place; Simple English: 2,044^th place)

Kiyoko Kakumasu. "Urubu-Kaapor Girls' Puberty Rites" (PDF). Summer Institute of Linguistics, Brazil. Archived from the original (PDF) on 6 February 2009. Retrieved 2 May 2010.

telegraph.co.uk (Global: 40^th place; Simple English: 35^th place)

Alleyne, Richard (2010-06-13). "Girls now reaching puberty before 10 - a year sooner than 20 years ago". The Daily Telegraph. London. Archived from the original on 2014-10-29. Retrieved 2018-04-01.

theworld.org (Global: 5,753^rd place; Simple English: 6,387^th place)

"Boys starting puberty younger than ever, study finds". 31 July 2016.

vstudentworld.yolasite.com (Global: low place; Simple English: low place)

Hamilton-Fairley, Diana. "Obstetrics and Gynaecology" (PDF) (Second ed.). Blackwell Publishing. Archived from the original (PDF) on 2018-10-09. Retrieved 2013-02-09. {{cite journal}}: Cite journal requires |journal= (help)

web.archive.org (Global: 1^st place; Simple English: 1^st place)

"Teenage Growth & Development: 11 to 14 Years". pamf.org. Archived from the original on 2013-07-03. Retrieved 2013-02-09.
"Teenage Growth & Development: 15 to 17 Years". pamf.org. Archived from the original on 2009-02-26. Retrieved 2013-02-09.
Hamilton-Fairley, Diana. "Obstetrics and Gynaecology" (PDF) (Second ed.). Blackwell Publishing. Archived from the original (PDF) on 2018-10-09. Retrieved 2013-02-09. {{cite journal}}: Cite journal requires |journal= (help)
Alleyne, Richard (2010-06-13). "Girls now reaching puberty before 10 - a year sooner than 20 years ago". The Daily Telegraph. London. Archived from the original on 2014-10-29. Retrieved 2018-04-01.
Diana Zuckerman; Paul Brown, Laura Walls (July 2008). "Are Bisphenol A (BPA) plastic products safe for infants and children?". National Research Center for Women & Families. Archived from the original on 27 August 2008. Retrieved 26 November 2008.
L.K. Smith (29 December 2006). "Native American Culture Perspectives – Kinaalda: The Navajo Puberty Ritual". Associated Content. Archived from the original on 25 May 2008. Retrieved 2 May 2010.
Kiyoko Kakumasu. "Urubu-Kaapor Girls' Puberty Rites" (PDF). Summer Institute of Linguistics, Brazil. Archived from the original (PDF) on 6 February 2009. Retrieved 2 May 2010.

womensenews.org (Global: low place; Simple English: 8,653^rd place)

Molly M. Ginty (30 March 2007). "US girls' early puberty attracts research flurry". Women's eNews. Retrieved 26 November 2008. {{cite journal}}: Cite journal requires |journal= (help)

worldcat.org (Global: 4^th place; Simple English: 6^th place)

search.worldcat.org

T.M. Plant (January 2001). "Leptin, Growth Hormone, and the Onset of Primate Puberty". J. Clin. Endocrinol. Metab. 86 (1): 458–460. doi:10.1210/jc.86.1.459. ISSN 0021-972X. PMID 11232044.
Al Alwan, Ibrahim; Felimban, Naila; Altwaijri, Yasmin; Tamim, Hani; Al Mutair, Angham; Shoukri, Mohamed; Tamimi, Waleed (2010). "Puberty onset among boys in riyadh, saudi arabia". Clinical Medicine Insights. Pediatrics. 4 CMPed.S4610: 19–24. doi:10.4137/cmped.s4610. ISSN 1179-5565. PMC 3666985. PMID 23761992.
Felimban, Naila; Jawdat, Dunia; Al-Twaijri, Yasmin; Al-Mutair, Angham; Tamimi, Waleed; Shoukri, Mohamed; Tamim, Hani; Al-Alwan, Ibrahim (July 2013). "Pubertal characteristics among schoolgirls in Riyadh, Saudi Arabia". European Journal of Pediatrics. 172 (7): 971–975. doi:10.1007/s00431-012-1752-2. ISSN 1432-1076. PMID 23640021.

Puberty (Simple English Wikipedia)

adsabs.harvard.edu (Global: 14th place; Simple English: 17th place)

ui.adsabs.harvard.edu

archive.org (Global: 6th place; Simple English: 3rd place)

associatedcontent.com (Global: low place; Simple English: 4,962nd place)

bbc.co.uk (Global: 11th place; Simple English: 9th place)

news.bbc.co.uk

center4research.org (Global: low place; Simple English: low place)

doi.org (Global: 2nd place; Simple English: 2nd place)

ghanaweb.com (Global: 1,750th place; Simple English: 962nd place)

howstuffworks.com (Global: 1,354th place; Simple English: 397th place)

health.howstuffworks.com

kidshealth.org (Global: low place; Simple English: 1,591st place)

msu.edu (Global: 1,979th place; Simple English: 1,383rd place)

archive.lib.msu.edu

mum.org (Global: low place; Simple English: low place)

newscientist.com (Global: 1,041st place; Simple English: 477th place)

nih.gov (Global: 5th place; Simple English: 5th place)

pubmed.ncbi.nlm.nih.gov

ncbi.nlm.nih.gov

nlm.nih.gov

pamf.org (Global: low place; Simple English: 6,292nd place)

semanticscholar.org (Global: 15th place; Simple English: 11th place)

api.semanticscholar.org

sil.org (Global: 3,204th place; Simple English: 2,044th place)

telegraph.co.uk (Global: 40th place; Simple English: 35th place)

theworld.org (Global: 5,753rd place; Simple English: 6,387th place)

vstudentworld.yolasite.com (Global: low place; Simple English: low place)

web.archive.org (Global: 1st place; Simple English: 1st place)

womensenews.org (Global: low place; Simple English: 8,653rd place)

worldcat.org (Global: 4th place; Simple English: 6th place)

search.worldcat.org

adsabs.harvard.edu (Global: 14^th place; Simple English: 17^th place)

archive.org (Global: 6^th place; Simple English: 3^rd place)

associatedcontent.com (Global: low place; Simple English: 4,962^nd place)

bbc.co.uk (Global: 11^th place; Simple English: 9^th place)

doi.org (Global: 2^nd place; Simple English: 2^nd place)

ghanaweb.com (Global: 1,750^th place; Simple English: 962^nd place)

howstuffworks.com (Global: 1,354^th place; Simple English: 397^th place)

kidshealth.org (Global: low place; Simple English: 1,591^st place)

msu.edu (Global: 1,979^th place; Simple English: 1,383^rd place)

newscientist.com (Global: 1,041^st place; Simple English: 477^th place)

nih.gov (Global: 5^th place; Simple English: 5^th place)

pamf.org (Global: low place; Simple English: 6,292^nd place)

semanticscholar.org (Global: 15^th place; Simple English: 11^th place)

sil.org (Global: 3,204^th place; Simple English: 2,044^th place)

telegraph.co.uk (Global: 40^th place; Simple English: 35^th place)

theworld.org (Global: 5,753^rd place; Simple English: 6,387^th place)

web.archive.org (Global: 1^st place; Simple English: 1^st place)

womensenews.org (Global: low place; Simple English: 8,653^rd place)

worldcat.org (Global: 4^th place; Simple English: 6^th place)