1. Working Group of the Renal Pelvic and Ureteral Cancer, Cancer Registration Committee of the Japanese Urological Association
2. National Cancer Center Hospital; Tokyo Japan
3. Department of Urology; Cancer Institute Hospital, Japanese Foundation of Cancer Research; Tokyo Japan
4. Department of Urology; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
5. Department of Urology; Faculty of Medicine; University of Tsukuba; Ibaraki Japan
6. Department of Urology; Hirosaki University Graduate School of Medicine; Hirosaki Japan
7. Department of Urology; Keio University School of Medicine; Tokyo Japan
8. Center for Innovative Clinical Medicine; Okayama University Hospital; Okayama Japan