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International Journal of Gynaecology and Obstetrics: the Official Organ of the International Federation of Gynaecology and Obstetrics|January 1, 1990
Breastfeeding promotion in family planning programsV H JenningsInternational Journal of Gynaecology and Obstetrics: the Official Organ of the International Federation of Gynaecology and Obstetrics|April 13, 2018
Breastfeeding promotion in family planning programsV H JenningsInternational Journal of Fertility and Menopausal Studies|May 1, 1995
Prediction and detection of the fertile period: the markersA R Martinez, M J Zinaman, V H Jennings, et al.Human Reproduction (Oxford, England)|September 18, 1998
Unintended pregnancies in women delivering at 18 South American hospitals. NFP-ECLAMC Group. Latin American Collaborative Study of Congenital MalformationsE C Gadow, J E Paz, J S López-Camelo, et al.Advances in Contraception : the Official Journal of the Society for the Advancement of Contraception|September 21, 2000
Knowledge of likely time of ovulation and contraceptive use in unintended pregnanciesE C Gadow, V H Jennings, J S López-Camelo, et al.Advances in Contraception : the Official Journal of the Society for the Advancement of Contraception|June 1, 1997
Pregnancy outcome in natural family planning users: cohort and case-control studies evaluating safetyJ L Simpson, R H Gray, A Perez, et al.Pageof 1