Comparing clean intermittent catheterisation and transurethral indwelling catheterisation for incomplete voiding after vaginal prolapse surgery: a multicentre randomised trial. - Hakvoort RA; Thijs SD; Bouwmeester FW; Broekman AM; Ruhe IM; Vernooij MM; Burger MP; Emanuel MH; Roovers JP (BJOG : an international journal of obstetrics and gynaecology, 2011)