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

by Sivin, I., Stern, J., Diaz, J., Diaz, M.M., Faundes, A., El Mahgoub, S., Diaz, S., Pavez, M., Coutinho, E., Mattos, C.E.R., McCarthy, T., Mishell Jr., D.R., Shoupe, D., Alvarez, F., Brache, V., Jimenez, E.
Published 2016