Flexible sigmoidoscopy and colonoscopy developed to help find and remove precancerous growths.
Flexible sigmoidoscopy and colonoscopy developed to help find and remove precancerous growths.
发明可弯曲乙状结肠镜和结肠镜以发现和切除癌前增生病变.
Flexible sigmoidoscopy and colonoscopy developed to help find and remove precancerous growths.
发明可弯曲乙状结肠镜和结肠镜以发现和切除癌前增生病变.