PPH与STARR术治疗出口梗阻性便秘手术前后排粪造影的分析比较
PPH여STARR술치료출구경조성편비수술전후배분조영적분석비교
A prospective center study of the contrast of Defecography pre-and post-PPH, pre-and post-STRAA for outlet defecation constipation
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