| G-I-N(Guideline International Network) Guidelines |
| http://www.g-i-n.net/library/international-guidelines-library |
| WHO Guidelines |
| http://www.who.int/publications/guidelines/en/ |
| NICE (UK) Guidelines |
| https://www.nice.org.uk/guidance |
| National Guideline Clearinghouse |
| https://www.guideline.gov/ |
| US Preventive Services Recommendations |
| https://www.uspreventiveservicestaskforce.org/BrowseRec/Index/browse-recommendations |
| AGA(American Gastroenterological Association) guidelines |
| https://gastro.org/clinical-guidance/ |
| ACG(American College of Gastroenterology) guidelines |
| https://gi.org/guidelines/ |
| ASGE(American Society for Gastrointestinal Endoscopy) guidelines |
| https://www.asge.org/home/resources/key-resources/guidelines |
| ESGE(European Society of Gastrointestinal Endoscopy) guidelines |
| https://www.esge.com/publications/guidelines/ |
