1. Laboratory of Genetic Disease and Perinatal Medicine and Key Laboratory of Birth Defects and Related Diseases of Women and Children of the Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, P. R. China
2. Department of Biochemistry, North Sichuan Medical College, Nanchong, P. R. China
3. Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, P. R. China
4. Division of Peptides Related with Human Disease, West China Hospital, Sichuan University, Chengdu, P. R. China
5. Department of Biochemistry and Molecular Biology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, P. R. China