U.S. survey confirms pill, liver tumor link.
D000569:Americas; D001695:Biology; D002477:Cells; D003267:Contraception; D003276:Contraceptives, Oral; D003625:Data Collection; D019049:Developed Countries; D003933:Diagnosis; D005193:Family Planning Services; D008099:Liver; D008571:Men; D009369:Neoplasms; D009656:North America; D010827:Physiology; D012106:Research; D012494:Sampling Studies; D014481:United States; D014930:Women
D003276:Contraceptives, Oral
Americas; Biology; Cancer; Contraception; Contraceptive Methods--side effects; Cytologic Effects; Developed Countries; Examinations And Diagnoses; Family Planning; Hepatic Effects; Men; North America; Northern America; Oral Contraceptives--side effects; Physiology; Research Methodology; Sampling Studies; Studies; Surveys; United States; Women