1. Department of Urology, Zealand University Hospital, Roskilde, Denmark;
2. Institute of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark;
3. Rigshospital, Copenhagen, Denmark;
4. Aalborg University Hospital, Aalborg, Denmark;
5. Odense University Hospital, Odense, Denmark;
6. Herlev and Gentofte University Hospital, Herlev, Denmark;
7. Aarhus University Hospital, Aarhus, Denmark