1. Department of Maternal and Child Health Care (P.-Y.S., K.H., J.-H.H., F.-B.T.), Anhui Medical University, Hefei City, Anhui Province 230032, People's Republic of China
2. Ma'anshan No. 2 People's Hospital (Y.-Q.X., S.-Q.Y.) Ma'anshan City, Anhui Province 243011, People's Republic of China
3. Department of Clinical Laboratory (T.L., Y.-H.X.), the First Affiliated Hospital of Anhui Medical University, Hefei City, Anhui Province 230082, People's Republic of China