The amount of postpartum bleeding in first 2 hours were measured and compared between the two groups.
精确测量产后2小时出血量；按新生儿性别分组进行比较。
Objective to elucidate the risk factors associated with the amount of postpartum bleeding for improving the quality of perinatal care.
目的阐明影响产后出血量的相关因素，提高围产期的保健质量。
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