参考文献:
UNIVERSITY OF NOTTINGHAM BAKER, Jillian G. FISCHER, Peter M. FROMONT, Christophe GARDINER, Sheila M. HILL, Stephen J. JADHAV, Gopal KELLAM, Barrie MISTRY, Shailesh WOOLARD, Jeanette Patent: WO01/1069 A1, 01 Location in patent: Page/Page column 37 38 WO 01/1069 A1