1. Department of Forensic Genetics, West China School of Basic Medical Sciences and Forensic Medicine Sichuan University Chengdu Sichuan P. R. China
2. Department of Forensic Science and Technology Sichuan Police College Luzhou Sichuan P. R. China
3. Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University Key Laboratory of Birth Defects and Related Diseases of Women and Children of Ministry of Education Chengdu Sichuan P. R. China
4. Department of Immunology, West China School of Preclinical and Forensic Medicine Sichuan University Chengdu Sichuan P. R. China
5. Department of Ultrasonography West China Second University Hospital Sichuan University Chengdu Sichuan P. R. China