中国计划生育学杂志
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妊娠期血清钙、磷、25羟维生素D浓度预测产后出血价值
河北省沧州市人民医院
The value of serum levels of calcium, phosphorus and 25 hydroxy vitamin D of pregnant women for predicting their postpartum hemorrhage occurance
Cangzhou People's Hospital, Hebei Province, 061000