1. Bostwick Laboratories, Richmond, Virginia, USA
2. Oncologic Center, Karolinska University Hospital, Stockholm, Sweden
3. George Washington University School of Medicine, Washington, District of Columbia, USA
4. Department of Urology, Sahlgrenska University Hospital, Göteborg, Sweden
5. Urologische Universitätsklinikum Eppendorf, Hamburg, Germany
6. Department of Urology, University Policlinic Hospital, Palermo, Italy
7. Gerald P. Murphy Cancer Foundation and Department of Surgery, Purdue University School of Veterinary Medicine, West Lafayette, Indiana, USA