To evaluate patient safety, resource utilization, and transfusion-related cost after a policy change from universal type and screen to selective type and screen on admission to labor and delivery.

中文翻译：

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分娩科的输血准备：一项提高安全性和成本的举措。

评估入院和分娩时的政策从通用型和筛查改为选择性型和筛查后的患者安全、资源利用和输血相关成本。