Author response to: Improving the existing diagnostic strategy by accounting for characteristics of the women in the diagnostic work up for postmenopausal bleeding. - Opmeer, B. C.; Van Doorn, H. C.; Heintz, A. P. M.; Burger, C. W.; Bossuyt, P. M. M.; Mol, B. W. J. (BJOG: an international journal of obstetrics and gynaecology, 2007)