1. Key Laboratory of Resource Biology and Biotechnology in Western China; Ministry of Education; the College of Life Sciences; Northwest University; Xi'an; Shaanxi; P. R. China
2. Department of Nephrology; Xi'an No. 4 Hospital; Xi'an; Shaanxi; P. R. China
3. Waters Technologies (Shanghai) Ltd.; Shanghai; P. R. China
4. National Institutes for Food and Drug Control; State Food and Drug Administration; Beijing; P. R. China