1. Department of Endocrinology; Dezhou Municipal Hospital; Dezhou 253000 P. R. China
2. Faculty of Thai Traditional Medicine; Prince of Songkla University; Hat Yai 90112 Thailand
3. School of Pharmacy; Jiangsu University; Zhenjiang 212013 R. P. China
4. Department of Biochemistry; Faculty of Science; Prince of Songkla University; Hat Yai 90112 Thailand
5. Department of Industrial Chemistry; Faculty of Science; University of Ilorin; P.M.B 1515 Ilorin Kwara State Nigeria