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

Contraceptive Use, Contraception, Hormonal Contraceptive +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

Reproductive Sciences, Contraception, Hormonal Contraceptive +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 · 179 citations

Contraceptive Use, Hormonal Contraceptive, Fertility +17

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

Margarita Pavez, Patricia Y. Miranda, Dale N. Robertson et al. · Contraception · 1982 · 112 citations

Medicine, Levonorgestrel Silastic Implants, Orthopaedics +4

The performance of levonorgestrel rod and Norplant contraceptive implants: a 5 year randomized study

Irving Sivin, I Campodónico, Orawan Kiriwat et al. · Human Reproduction · 1998 · 91 citations · Full text

Contraceptive Use, Hormonal Contraceptive, Fertility +20