a EMCO Private Clinic, Bad Dürrnberg, Austria; Reproductive Medicine Centre, Skane University Hospital, Lund University, Malmö, Sweden; Centre for Reproductive Medicine, Free University of Brussels, Belgium; Department of Urology, Paediatric Urology and Andrology, University Hospital Giessen and Marburg GmbH, Campus Giessen, Justus-Liebig-University, Giessen, Germany; Andrology Centre, Departme...