[1] Chiba Univ, Chiba, Japan
[2] Hokkaido Univ Hosp, Ctr Canc, Sapporo, Hokkaido 060, Japan
[3] Int Univ Hlth & WelfareS, Tokyo, Japan
[4] Keio Univ, Ctr Comprehens & Adv Med, Tokyo, Japan
[5] Japanese Fdn Multidisciplinary Treatment Canc, Tokyo, Japan
[6] Saitma Med Univ, Int Med Ctr, Translat Tesearch Ctr, Hidaka, Saitama, Japan
[7] NTT W Osaka Hosp, Osaka, Japan
[8] Kushiro Rosai Hosp, Kushiro, Hokkaido, Japan
[9] Showa Univ, Sch Med, Tokyo 142, Japan
[10] Kansai Rosai Hosp, Amagasaki, Hyogo, Japan