1. a National Chromatographic R&A Center, Dalian Institute of Chemical Physics , the Chinese Academy of Sciences , Dalian, P.R. China
2. b Biochemistry & Cell Biology Institute of Shanghai Institute for Biological Science , the Chinese Academy of Sciences , Shanghai, P.R. China
3. c Chuxiong Cigarette Company , Hongta Group , Chuxiong, Yunnan, P.R. China