1. Department of Pediatric Hepatobiliary Surgery, Children's Hospital of Fudan University and Key Laboratory of Neonatal Disease, Ministry of Health, Shanghai 200433, P.R. China
2. Medical College, Xizang Minzu University, Xianyang, Shaanxi 712000, P.R. China
3. Medical Scientific Affairs, Abbott Diagnostics Division, Abbott Laboratories, Shanghai 200032, P.R. China
4. Department of Clinical Laboratory, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, P.R. China