Antibodies against Chlamydia trachomatis and ovarian cancer risk in two independent populations by Trabert, B, Waterboer, T, Idahl, A, Brenner, N, Brinton, L, Butt, J, Coburn, S, Hartge, P, Hufnagel, K, Inturrisi, F, Lissowska, J, Mentzer, A, Peplonska, B, Sherman, M, Wills, G, Woodhall, S, Pawlita, M, Wentzensen, N