Brache V, Vieira CS, Plagianos M, Lansiaux M, et al. Pharmacodynamics and pharmacokinetics of a copper intrauterine contraceptive
system releasing ulipristal acetate: a randomized proof-of-concept study. Contraception 2021 Jun 19. pii: S0010-7824(21)00193.
PMID: 34157312