A randomized, double-blind study of two combined and two progestogen-only oral contraceptives.
Sheth A, Jain U, Sharma S, Adatia A, Patankar S, Andolsek L, Pretnar-Darovec A, Belsey MA, Hall PE, Parker RA, Ayeni S, Pinol A, Li Hoi Foo C.
Sheth A, et al. Among authors: hall pe.
Contraception. 1982 Mar;25(3):243-52. doi: 10.1016/0010-7824(82)90047-6.
Contraception. 1982.
PMID: 6804162
Clinical Trial.