2012-02-01
欧洲胃肠道内窥镜学会(ESGE,European Society of Gastrointestinal Endoscopy)
2011-05-01
英国国家卫生与临床优化研究所(NICE,National Institute for Health and Clinical Excellence)
2011-03-01
2010-01-01
美国胃肠病学院(ACG,American College of Gastroenterology)