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Anatomy and Embryology|January 1, 1985
An electron microscopic study of sperm penetration into the human egg investmentsJ Pereda, M CoppoContraception|June 1, 1987
Long-term follow-up of women treated with Norplant implantsS Díaz, M Pavez, P Miranda, et al.Biology of Reproduction|December 1, 1982
Role of ovarian and adrenal progesterone in the regulation of ovum transport in pregnant ratsM L Forcelledo, P Morales, R Vera, et al.Contraception|June 1, 1985
Plasma levonorgestrel and progesterone levels in women treated with silastic covered rods containing levonorgestrelH B Croxatto, S Díaz, A Brandeis, et al.Contraception|December 1, 1980
Plasma levels of levonorgestrel in women during longterm use of NorplantsH B Croxatto, S Díaz, P Miranda, et al.Clinical Endocrinology|July 1, 1989
Variable effects of RU 486 on endometrial maintenance in the luteal phase extended by exogenous hCGH B Croxatto, A M Salvatierra, H D Croxatto, et al.Contraception|April 1, 1986
Bleeding pattern, outcome of accidental pregnancies and levonorgestrel plasma levels associated with method failure in Norplant implants usersS Díaz, M Pavez, C Herreros, et al.Human Reproduction (Oxford, England)|June 1, 1994
Effect of mifepristone on inhibition of ovulation and induction of luteolysisI M Spitz, H B Croxatto, P Lähteenmäki, et al.Contraception|July 1, 1990
Clinical assessment of treatments for prolonged bleeding in users of Norplant implantsS Díaz, H B Croxatto, M Pavez, et al.Human Reproduction (Oxford, England)|April 30, 1999
A multicentre efficacy and safety study of the single contraceptive implant Implanon. Implanon Study GroupH B Croxatto, J Urbancsek, R Massai, et al.Pageof 19