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通过对我院1986 ~ 1992年41例产妇发生软产道血肿的原因、部位及相关因素进行分析，提出产后血肿多于产时血肿。
The authors analysed the causes, site and correlative factors of hematoma formed on the soft parturient canal in 41 parturients from 1986 to 1992 in their hospital.
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