[1] St Lukes Int Hosp, Tokyo, Japan
[2] Tokyo Metropolitan Univ, Tokyo, Japan
[3] Saitama Med Univ Int Med Ctr, Saitama, Japan
[4] Natl Hosp Org Tokyo Natl Hosp, Tokyo, Japan
[5] Saitama Med Univ, Saitama Med Ctr, Saitama, Japan
[6] Tokyo Metropolitan Canc & Infect Dis Ctr Komagome, Tokyo, Japan
[7] Chiba Canc Ctr, Chiba, Japan