Sichuan Provincial Department of Public Security Chengdu China;
Department of Forensic Toxicological Analysis West China School of Preclinical and Forensic Medicine Sichuan University Chengdu China;
Department of Forensic Toxicological Analysis West China School of Preclinical and Forensic Medicine Sichuan University Chengdu China;
Department of Forensic Toxicological Analysis West China School of Preclinical and Forensic Medicine Sichuan University Chengdu China;