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Futa Koga, Hiroto Tanaka, Seigo Takamatsu, Shinnichi Baba, Hiroshi Takihara, Akioko Hasegawa, Eri Yanagihara, Taro Inoue, Toshihiro Nakano, Chie Ueda, Wataru Ono 
World J Clin Oncol 3(4):63-66. Published online Apr 12, 2012. doi: 10.5306/wjco.v3.i4.63