1. Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China
2. The Key Laboratory of Major Autoimmune Diseases, Anhui Medical University, Hefei, Anhui, China
3. Department of Medical Oncology, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
4. Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal and Child Health Hospital of Foshan, Foshan, Guangdong, China