Irwin KL, Rosero-Bixby L, Oberle MW, Lee NC, Whatley AS, Fortney JA, Bonhomme MG. Oral contraceptives and cervical cancer risk in Costa Rica. Detection bias or causal association? JAMA. 1988 Jan 1;259(1):59-64.
Irwin KL, Rosero-Bixby L, Oberle MW, Lee NC, Whatley AS, Fortney JA, Bonhomme MG. Oral contraceptives and cervical cancer risk in Costa Rica. Detection bias or causal association? JAMA. 1988 Jan 1;259(1):59-64.