题目内容

关于大张异体皮开洞嵌植小片自体皮移植术，以下哪些是正确的()

A. 与常规自体邮票/小皮片移植相比，在大张异体皮下开洞嵌植的自体小皮片间距可适当增大
B. 必须在移植异体皮的同时进行自体小皮片的移植
C. 由于大张异体皮最终将被排斥，故异体皮有无活性对最终植皮存活率并无影响
D. 由于有异体皮的保护，故对植皮区的止血和无菌程度要求比较低
E. 植皮创面坏死组织应彻底清除

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