Bennion LJ, Ginsberg RL, Gernick MB, Bennett PH (ianuarie 1976). „Effects of oral contraceptives on the gallbladder bile of normal women”. N. Engl. J. Med. 294 (4): 189–92. doi:10.1056/NEJM197601222940403. PMID1244533.
Bennion LJ, Ginsberg RL, Gernick MB, Bennett PH (ianuarie 1976). „Effects of oral contraceptives on the gallbladder bile of normal women”. N. Engl. J. Med. 294 (4): 189–92. doi:10.1056/NEJM197601222940403. PMID1244533.