Methods A large scale of case-control study was conducted in Chaoshan region of China, which is one of high incidence district of esophageal cancer.
2
目的：探讨喀什地区食管癌的临床及内镜分析和流行特点。
Objective: To investigate the clinical, endoscopic: and epidemic character of esophageal carcinoma in Kashgar.
3
笔者在食管癌高发地区开展食管癌早诊早治的临床研究逾30年。
The author had conducted the clinical study on early diagnosis and early therapy of esophageal cancer (EC) in the area of high prevalence for more than 30 years.
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