1. Urology Unit, Azienda Ospedaliero-Universitaria Ospedali Riuniti di Ancona, Università Politecnica delle Marche, Ancona, Italy.
2. Department of Surgery, Faculty of Medicine, S.H. Ho Urology Center, The Chinese University of Hong Kong, Hong Kong, China.
3. Department of Urology, Ng Teng Fong General Hospital, Singapore, Singapore.