参考文献:
NOVARTIS AG ANTONIOS-MCCREA, William, R. BARSANTI, Paul, A. HU, Cheng JIN, Xianming MARTIN, Eric, J. PAN, Yue PFISTER, Keith, B. SENDZIK, Martin SUTTON, James WAN, Lifeng Patent: WO1/667 A1, 1 Location in patent: Page/Page column 91-9 WO 1/667 A1