"Gardasil 9 EPAR". European Medicines Agency (EMA). 17 September 2018. Archived from the original on 6 April 2020. Retrieved 3 April 2020. Text was copied from this source which is copyright European Medicines Agency. Reproduction is authorized provided the source is acknowledged.
"Gardasil EPAR". European Medicines Agency. 17 September 2018. Archived from the original on 11 June 2022. Retrieved 6 July 2022.
"Human papillomavirus vaccines: WHO position paper, May 2017". Weekly Epidemiological Record. 92 (19): 241–268. May 2017. hdl:10665/255353. PMID28530369.
"Human papillomavirus vaccines: WHO position paper, May 2017". Weekly Epidemiological Record. 92 (19): 241–268. May 2017. hdl:10665/255353. PMID28530369.
"Gardasil 9 EPAR". European Medicines Agency (EMA). 17 September 2018. Archived from the original on 6 April 2020. Retrieved 3 April 2020. Text was copied from this source which is copyright European Medicines Agency. Reproduction is authorized provided the source is acknowledged.
"Gardasil EPAR". European Medicines Agency. 17 September 2018. Archived from the original on 11 June 2022. Retrieved 6 July 2022.