Methods One hundred and forty patients were divided randomly into two groups and underwent open lateral sphincterotomy or midline spincterotomy.

　
英 美
  • 方法采用隨機對照臨床觀(guān)察方法,比較140例患者采用側位內括約肌切擴縫合術(shù)和后正中切擴術(shù)的療效、并發(fā)癥及愈合時(shí)間。
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