学会発表（国際）
Influence of hospital and surgeon volumes on operative time, blood loss and perioperative complications in radical nephrectomy.
Yanaihara H, Deguchi N, Fuji K, Yasunaga H, Matsuyama Y, and Ohe K. Influence of hospital and surgeon volume on operative time, blood loss, and perioperative complications in radical nephrectomy: The results from nationwide survey in Japan. American Urological Association Annual Meeting. Journal of Urology 179(4) Supplement: 29, 2008 Orlando, Florida 17-22 May 2008