BOEHRINGER INGELHEIM INTERNATIONAL GMBH; GRAUERT, Matthias; BAKKER, Remko; BREITFELDER, Steffen; BUETTNER, Frank; EICKELMANN, Peter; FOX, Thomas; GRUNDL, Marc; LEHMANN-LINTZ, Thorsten; RIST, Wolfgang Patent: WO2011/138427 A2, 2011 ; Location in patent: Page/Page column 170 ; WO 2011/138427 A2