Risk of different histological types of postmenopausal breast cancer by type and regimen of menopausal hormone therapy - Flesch-Janys, D; Slanger, T; Mutschelknauss, E; Kropp, S; Obi, N; Vettorazzi, E; Braendle, W; Bastert, G; Hentschel, S; Berger, J; Chang-Claude, J (Int J Cancer, 2008)