Authors: R Stein; C Assion; R Beetz; M Bürst; R Cremer; A Ermert; M Goepel; E Kuwertz-Bröking; B Ludwikowski; T Michael; J Pannek; H Peters; D Rohrmann; I Rübben; A Schröder; R Trollmann; J W Thüroff; W Wagner Journal: Urologe A Date: 2015-02 Impact factor: 0.639