编号/登记号:
注册时间:
研究开始时间:
研究结束时间:
项目类型:
本院角色:
多中心研究:
招募状态:
研究疾病/适应症:
研究类型:
研究单位:
[1]Sichuan Cancer Hospital and Research Institute
研究目的:
To determine whether older patients who underwent esophagectomy had better outcome survival than those who were non-surgically treated