[1] NHO Kyushu Canc Ctr, Geriatr Oncol Serv, Fukuoka, Japan
[2] NHO Kyushu Canc Ctr, Div Med Oncol, Fukuoka, Japan
[3] UNC Lineberger Comprehens Canc Ctr, Chapel Hill, NC USA
[4] Fukuoka Univ, Fac Med, Gen Med Res Ctr, Fukuoka, Japan
[5] Kyorin Univ, Sch Med, Mitaka, Tokyo, Japan
[6] Toda Cent Gen Hosp, Toda, Saitama, Japan
[7] Juntendo Univ, Tokyo, Japan
[8] Saitama Med Univ, Int Med Ctr, Hidaka, Saitama, Japan
[9] Tokyo Womens Med Univ, Sch Med, Tokyo, Japan
[10] Natl Canc Ctr, Tokyo, Japan
[11] Kansai Med Univ, Hirakata, Osaka, Japan
[12] Osaka City Univ, Osaka, Japan
[13] Showa Univ, Sch Med, Tokyo, Japan
[14] Keio Univ, Sch Med, Tokyo, Japan