Scanning electron microscopic (SEM) changes of the endometrium in women taking high doses of levonorgestrel as emergency postcoital contraception

Ethinylestradiol and dl-Norgestrel as a Postcoital Contraceptive

A. Albert Yuzpe, William J. Lancee · Fertility and Sterility · 1977 · 270 citations

Medicine, Obstetrics, Pharmacology +12

Endometrial progesterone receptors and markers of uterine receptivity in the window of implantation

Bruce A. Lessey, I-tein Yeh, Arthur J. Castelbaum et al. · Fertility and Sterility · 1996 · 217 citations

Medicine, Gynecology, Physiology +13

Implantation: Uterine pinopodes as markers of the ‘nidation window’ in cycling women receiving exogenous oestradiol and progesterone

George Nikas, Petros Drakakis, D. Loutradis et al. · Human Reproduction · 1995 · 205 citations

Medicine, Endocrinology, Gynecology +10

Over the Counter

Charles Wilson · The Business History Review · 1958 · 140 citations

Social Sciences, History, Corporate Finance +5

Emergency contraception: randomized comparison of advance provision and information only

Charlotte Ellertson · Obstetrics and Gynecology · 2001 · 116 citations

Medicine, Preventive Medicine, Contraception +15