参考文献:
BRISTOL-MYERS SQUIBB COMPANY UNIVERSITÉ DE MONTRÉAL BANVILLE, Jacques RÉMILLARD, Roger RUEDIGER, Edward H. DEON, Daniel H. GAGNON, Marc DUBÉ, Laurence GUY, Julia PRIESTLEY, Eldon Scott POSY, Shoshana L. MAXWELL, Brad D. WONG, Pancras C. Patent: WO1/1679 A1, 1 Location in patent: Paragraph 19