Comparison of demographic data and co-morbidities of patients underwent the procedure in Cape Cod Hospital (CCH group) versus in other hospitals (USA group).

Comparison of demographic data and co-morbidities of patients underwent the procedure in Cape Cod Hospital (CCH group) versus in other hospitals (USA group).本研究对科德角医院（Cape Cod Hospital，CCH）组与美国其他医院（USA组）中接受该手术的患者的人口统计学资料及合并症情况进行了对比。