参考文献:
AMGEN INC. BARTBERGER, Michael D. BECK, Hilary Plake CHEN, Xiaoqi CONNORS, Richard V. DEIGNAN, Jeffrey DUQUETTE, Jason A. EKSTEROWICZ, John FOX, Brian M. FU, Jiasheng GONZALEZ BUENROSTRO, Ana GONZALEZ LOPEZ DE TURISO, Felix GUSTIN, Darin J. HEATH, Julie A. JOHNSON, Michael G. KAYSER, Frank KOPECKY, David J. LI, Yihong LI, Zhihong MA, Zhihua MCINTOSH, Joel MEDINA, Julio C. MIHALIC, Jeffrey T. OLSON, Steven H. REW, Yosup ROVETO, Philip M. SCHMITT, Michael J. SUN, Daqing WANG, Xiaodong WANSKA, Malgorzata WEATHERS, Christine YAN, Xuelei Patent: WO01/4950 A1, 01 Location in patent: Page/Page column 88