1. Department of Forensic Medicine; Nanjing Medical University; Nanjing P. R. China
2. Beijing Zhongzheng forensic DNA evidence institute; Beijing P. R. China
3. Research Center of Stomatology; Stomatological Hospital; Xi'an Jiaotong University; Xi'an P. R. China
4. Xi'an Jiaotong University Health Science Center; Xi'an P. R. China
5. Blood Center of Shaanxi Province; Xi'an P. R. China
6. People's hospital of Arong Banner; Hulun Buir City P. R. China
7. The Second Affiliated Hospital of Xi'an Jiaotong University; Xi'an P. R. China
8. Department of Joint Surgery; Xi'an Hong-hui Hospital; Xi'an P. R. China
9. Department of Joint Surgery; Hong-hui Hospital; Xi'an Jiaotong University Medical College; Xi'an P. R. China