2012-12-04
美国医师协会(ACP,American College of Physicians)
2012-03-21
欧洲胃肠道内窥镜学会(ESGE,European Society of Gastrointestinal Endoscopy)
2012-03-02
2011-03-04
2010-05-01
美国胃肠内镜学会(ASGE,American Society for Gastrointestinal Endoscopy)
2010-03-01