参考文献:
BOEHRINGER INGELHEIM INTERNATIONAL GMBH COGAN, Derek MOSS, Neil SARKO, Christopher Ronald BAMFORD, Samantha Jayne LOKE, Pui Leng NAPIER, Spencer Charles, R. TYE, Heather WHITTAKER, Mark Patent: WO200/8057 A, 200 Location in patent: Page/Page column 46 WO 200/08057 A