Efficacy of the 1-year (13-cycle) segesterone acetate and ethinylestradiol contraceptive vaginal system: results of two multicentre, open-label, single-arm, phase 3 trials by David F Archer, ProfMD, Ruth B Merkatz, PhD, Luis Bahamondes, ProfMD, Carolyn L Westhoff, ProfMD, Philip Darney, ProfMD, Dan Apter, MD, Jeffrey T Jensen, ProfMD, Vivian Brache, BS, Anita L Nelson, ProfMD, Erika Banks, ProfMD, György Bártfai, ProfMD, David J Portman, MD, Marlena Plagianos, MS, Clint Dart, MS, Narender Kumar, PhD, George W Creasy, MD, Regine Sitruk-Ware, MD, Diana L Blithe, PhD

Get full text