1. Department of Medical Genetics; Second Military Medical University; Shanghai 200433 China
2. Center of Reproductive Medicine; Shanghai Changzheng Hospital, Second Military Medical University; Shanghai 200003 China
3. Third Department of Hepatic Surgery; Eastern Hepatobiliary Surgery Hospital, Second Military Medical University; Shanghai 200438 China
4. Fifth Department of Hepatic Surgery; Eastern Hepatobiliary Surgery Hospital, Second Military Medical University; Shanghai 200438 China
5. Department of Cell Biology; Second Military Medical University; Shanghai 200433 China