1. Department of Surgery; Urology Service; Memorial Sloan Kettering Cancer Centre; New York NY USA
2. Department of Urology; Tel-Aviv Sourasky Medical Centre; Sackler School of Medicine; Tel-Aviv University; Tel Aviv-Yafo Israel
3. Department of Epidemiology and Biostatistics; Memorial Sloan Kettering Cancer Centre; New York NY USA
4. Department of Urology; Lenox Hill Hospital; New York NY USA