Hall PE (1994). "The introduction of Cyclofem into national family planning programmes: experience from studies in Indonesia, Jamaica, Mexico, Thailand and Tunisia". Contraception. 49 (489): 489–507. doi:10.1016/0010-7824(94)90006-x. PMID8045134. 8045134.
ippph.org
"Concept Foundation". Initiative on Public-Private Partnerships for Health. 2006-03-07. Archived from the original on 2006-10-10. Retrieved 2006-11-17.
nih.gov
pubmed.ncbi.nlm.nih.gov
Hall PE (1994). "The introduction of Cyclofem into national family planning programmes: experience from studies in Indonesia, Jamaica, Mexico, Thailand and Tunisia". Contraception. 49 (489): 489–507. doi:10.1016/0010-7824(94)90006-x. PMID8045134. 8045134.
"Concept Foundation". Initiative on Public-Private Partnerships for Health. 2006-03-07. Archived from the original on 2006-10-10. Retrieved 2006-11-17.