[Influential factors for anemia in pregnancy based on a nested case-control study in Changsha]

Tan S, Li H, Gao X, Xiang S, He Q, Zhang L, Huang L, Xiong C, Yan Q, Yan Y. [Influential factors for anemia in pregnancy based on a nested case-control study in Changsha]. J Cent South Univ Med Sci. 2016; 41(6): 619-25.