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

Task Force on Oral ContraceptivesSuporn KoetsawangA. V. MandlekarUsha R. KrishnaV. N. PurandareC. K. DeshpandeS. C. ChewRosilind FongS. S. RatnamL. KovacsS. ZalanyiA. TekulicsM. BriggsM. A. BelseyP. E. HallR. A. ParkerOrganisation Mondiale de la SanteMahidol UniversityKing Edward Memorial Hospital IndiaNational University of SingaporeUniversity of Szeged Faculty of MedicineDeakin University2018-04-302018-04-301980-01-01Contraception. Vol.21, No.5 (1980), 445-459001078242-s2.0-0018820995https://repository.li.mahidol.ac.th/handle/20.500.14594/11184Mahidol UniversityMedicineA randomized, double-blind study of two combined oral contraceptives containing the same progestogen, but different estrogensArticleSCOPUS10.1016/0010-7824(80)90010-4