1. Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Southwest Medical University, Luzhou 646000, China
2. Laboratory of Forensic DNA, The Judicial Authentication Center, Southwest Medical University, Luzhou 646000, China
3. Basic Medical School, Southwest Medical University, Luzhou 646000, China
4. Department of Obstetrics and Center for Prenatal Diagnosis, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China