参考文献

Shionogi and Co., Ltd.; Tonogaki, Keisuke; Ino, Akira; Kojima, Eiichi; Katou, Manabu; Iwatsu, Masafumi; Tanaka, Nobuyuki; Fujioka, Masahiko Patent: US2013/184240 A1, 2013 ; Location in patent: Paragraph 0710; 0715; 0716 ;