Clinical performance of a new two-rod levonorgestrel contraceptive implant: A three-year randomized study with Norplant® implants as controls

by Sivin, I., Stern, J., Viegas, O., Campodonico, I., Diaz, S., Pavez, M., Wan, L., Koetsawang, S., Kiriwat, O., Piya, Anant M., Holma, P., El, Din Abdalla K.
Published 2013