参考文献

BOEHRINGER INGELHEIM INTERNATIONAL GmbH; LANKAU, Hans-Joachim; LANGEN, Barbara; GRUNWALD, Christian; HOeFGEN, Norbert; STANGE, Hans; DOST, Rita; EGERLAND, Ute Patent: WO2012/104293 A1, 2012 ; WO 2012/104293 A1