Carlos E.R. Mattos

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

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

Intrauterine contraception with copper and with levonorgestrel: A randomized study of the TCu 380Ag and levonorgestrel 20 mcg/day devices

Irving Sivin, Francisco Alvarez, Sayed El Mahgoub et al. · Contraception · 1984 · 71 citations · Full text

Contraception, Infertility, Contraceptive Use +13

Two years of intrauterine contraception with levonorgestrel and with copper: A randomized comparison of the TCu 380Ag and levonorgestrel 20 mcg/day device

Irving Sivin, Janet Stern, Margarita Díaz et al. · Contraception · 1987 · 68 citations · Full text

Contraception, Contraceptive Use, Hormonal Contraceptive +13

Longterm contraception by subcutaneous silasticR capsules containing megestrol acetate

Elsimar Metzker Coutinho, Carlos E.R. Mattos, Ana Rita S. Sant'Anna et al. · Contraception · 1970 · 43 citations · Full text

Contraception, Hormonal Contraceptive, Oral Contraceptive +6