参考文献

Eli Lilly and Company Patent: US5726159 A1, 1998 ; US 5726159 A Title/Abstract Full Text Show Details Eli Lilly and Company Patent: US5914319 A1, 1999 ; US 5914319 A Title/Abstract Full Text Show Details Eli Lilly and Company Patent: US5707966 A1, 1998 ; US 5707966 A