Colonoscopy is a difficult procedure to master, and gastroenterologists require hundreds of supervised procedures to reach an expert level.
结肠镜检查是一个艰难的过程掌握，肠胃需要监督程序百年才达到专家的水平。
2
The study was carried out by gastroenterologists at Veterans Affairs hospitals in New Mexico and Illinois, and financed by the American Digestive Health Foundation.
该研究由新墨西哥州和伊利诺斯州退伍军人医疗机构的胃肠病学家们发起，由美国消化保健基金会资助。
3
Gastroenterologists will be familiar with the use of high-dose PPI intravenously for the prevention of re-bleeding following endotherapy for bleeding peptic ulcer.