1. Department of Chemistry, Tsinghua University, Building 17 Muxidi Nanli, West City P.O. Box 3817 Beijing, 100038 CN.
2. Professor, Department of Chemistry, Tsinghua University, Beijing CN.
3. Institute of Forensic Science People's Republic of China, Beijing CN.
4. Professor, Department of Forensic Science and Technology, Criminal Police College of China, Shengyang, CN.