参考文献:
UNIVERSITY HEALTH NETWORK PAULS, Heinz W. LAUFER, Radoslaw LIU, Yong LI, Sze-Wan FORREST, Bryan T. LANG, Yunhui PATEL, Narendra Kumar B. EDWARDS, Louise G. NG, Grace SAMPSON, Peter Brent FEHER, Miklos AWREY, Donald E. Patent: WO2/55 A, 2 Location in patent: Page/Page column 9