参考文献:
ABBOTT LABORATORIES ROCKWAY, Todd W. BETEBENNER, David A. DEGOEY, David A. FLENTGE, Charles A. HUTCHINSON, Douglas K. KATI, Warren M. KRUEGER, Allan C. LIU, Dachun LONGENECKER, Kenton L. PRATT, John K. STEWART, Kent D. WAGNER, Rolf Patent: WO2/437 A, 2 Location in patent: Page/Page column 74 WO 2/437 A