Methods The curative effect of operative and nonoperative methods in treating inpatients with SAP in two different periods were compared.
方法比较两个不同时段重症急性胰腺炎住院病人的手术治疗和非手术治疗的疗效。
Methods The serum nitric oxide levels in different perinatal periods were determined and were compared with those in non-pregnant group.
方法：分别检测非妊娠期及围产期妇女不同时期血清一氧化氮浓度并进行比较。
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