1. Shanghai Municipal Center for Disease Control and Prevention, No. 1380, Zhong Shan Xi Road, Shanghai 200336, PR China
2. N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninskii Prospekt 47, Moscow 119991, Russia
3. TEDA Institute of Biological Sciences and Biotechnology, Nankai University, 23 Hongda Street, TEDA, Tianjin 300457, PR China