Incidence of arterial disease among oral contraceptive users. Royal College of General Practitioners' Oral Contraception Study. by Layde, P, Ory, H, Beral, V, Kay, C

Age-specific differences in the relationship between oral contraceptive use and breast cancer. by Wingo, P, Lee, N, Ory, H, Beral, V, Peterson, H, Rhodes, P

AGE-SPECIFIC DIFFERENCES IN THE RELATION BETWEEN ORAL-CONTRACEPTIVE USE AND BREAST-CANCER by Wingo, P, Lee, N, Ory, H, Beral, V, Peterson, H, Rhodes, P

Age-specific differences in the relationship between oral contraceptive use and breast cancer. by Wingo, P, Lee, N, Ory, H, Beral, V, Peterson, H, Rhodes, P