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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 Coutinho, Carlos E.R. Mattos, Sayed El Mahgoub, Soledad Diaz, Margarita Pavez, Francisco Alvarez, Vivian Brache, Francisco Thevenin, Juan Diaz, Anibal Faundes, M.MarVolume:
44
Year:
1991
Language:
english
Pages:
481
DOI:
10.1016/0010-7824(91)90149-a
File:
PDF, 589 KB
english, 1991