Efficacy and safety of estetrol (15 mg)/drospirenone (3 mg) combination in a cyclic regimen for the treatment of primary and secondary dysmenorrhea: a multicenter, placebo-controlled, double-blind, randomized study.
Osuga Y, Kobayashi T, Hirakawa A, Takayanagi T, Nogami M, Tayzar K, Mochiyama T, Hirayama M, Foidart JM, Harada T.
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