参考文献:
BRISTOL-MYERS SQUIBB COMPANY DHAR, T.G. Murali XIAO, Hai-Yun WATTERSON, Scott Hunter KO, Soo S. DYCKMAN, Alaric J. LANGEVINE, Charles M. DAS, Jagabandhu CHERNEY, Robert J. Patent: WO2/59784 A, 2 Location in patent: Page/Page column 79-8 WO 2/59784 A