参考文献

EISAI RandD MANAGEMENT CO., LTD.; YOSHIDA, Ichiro; OKABE, Tadashi; MATSUMOTO, Yasunobu; WATANABE, Nobuhisa; ONIZAWA, Yuji; OHASHI, Yoshiaki; HARADA, Hitoshi Patent: US2013/65925 A1, 2013 ; Location in patent: Paragraph 0239; 0240 ; US 20130065925 A1