Margarita Pavez

Prolonged intrauterine contraception: A seven-year randomized study of the levonorgestrel 20 mcg/day (LNg 20) and the Copper T380 Ag IUDS

Irving Sivin, Janet Stern, Elsimar Metzker Coutinho et al. · Contraception · 1991 · 237 citations · Full text

Medicine, Gynecology, Obstetrics +14

Pituitary–ovarian function following the standard levonorgestrel emergency contraceptive dose or a single 0.75-mg dose given on the days preceding ovulation

H.B. Croxatto, Vivian Brache, Margarita Pavez et al. · Contraception · 2004 · 195 citations

Medicine, Endocrinology, Gynecology +15

Long-term contraception with the levonorgestrel 20 mcg/day (LNg 20) and the Copper T 380Ag intrauterine devices: A five-year randomized study

Irving Sivin, Sayed El Mahgoub, Terence McCarthy et al. · Contraception · 1990 · 180 citations

Medicine, Gynecology, Obstetrics +13

A five-year clinical trial of levonorgestrel silastic implants (Norplant™)

Margarita Pavez, Patricia Y. Miranda, Dale N. Robertson et al. · Contraception · 1982 · 113 citations

Medicine, Surgery, Implant Surgery +2

Rates and outcomes of planned pregnancy after use of Norplant capsules, Norplant II rods, or levonorgestrel-releasing or copper TCu 380Ag intrauterine contraceptive devices

Irving Sivin, Margarita Pavez, Francisco Alvarez et al. · American Journal of Obstetrics and Gynecology · 1992 · 92 citations

Medicine, Gynecology, Obstetrics +15