NOBUKO UTSUMI, TAKEO TAKAHASHI, TAKAFUMI YAMANO, FUMIHARU MACHIDA, SHINSUKE KANAMORI, MIO SAITO, RIKANA SODA, SHUICHI UENO, TOYOKAZU HAYAKAWA, SHOGO HATANAKA and MUNEFUMI SHIMBO
Department of Radiation Oncology, Saitama Medical Center, Saitama Medical University, Saitama, Japan, Department of Radiation Therapy, JCHO Tokyo Shinjuku Medical Center, Tokyo, Japan