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Sphincterotomy.

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اقرأ على الانترنت اقرأ أكثر حفظ في قائمتي
  • معلومة اضافية
    • نبذة مختصرة :
      DEFINITION: The surgical removal of all or a portion of a sphincter, a ring of muscle that closes or constricts an opening or passage in the body when the muscles contract