參考文獻:
GLAXO GROUP LIMITED GLAXOSMITHKLINE (CHINA) RandD COMPANY LIMITED NICHOLS, Paula Louise EATHERTON, Andrew John BAMBOROUGH, Paul JANDU, Karamjit Singh PHILPS, Oliver James ANDREOTTI, Daniele Patent: WO2011/38572 A1, 2011 Location in patent: Page/Page column 48 WO 2011/038572 A1