A randomized, double-blind study of two combined oral contraceptives containing the same progestogen, but different estrogens

by Task Force on Oral Contraceptives, Suporn Koetsawang, A. V. Mandlekar, Usha R. Krishna, V. N. Purandare, C. K. Deshpande, S. C. Chew, Rosilind Fong, S. S. Ratnam, L. Kovacs, S. Zalanyi, A. Tekulics, M. Briggs, M. A. Belsey, P. E. Hall, R. A. Parker
Published 2018