Affiliation: | 1.The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230012, China ;2.Anhui Public Health Clinical Center, Hefei, Anhui, 230012, China ;3.Bengbu Medical University, Bengbu, 233000, Anhui, China ;4.National Drug Clinical Trial Institution, the First Affiliated Hospital of Bengbu Medical University, Bengbu, 233000, Anhui, China ;5.Anhui Provincial Center for Women and Child Health, Hefei, 230032, Anhui, China ; |