1. Veterans Affairs San Diego Healthcare System; San Diego California USA
2. Division of Gastroenterology; University of California; San Diego California USA
3. School of Medicine; University of California; San Diego California USA
4. Clinical and Translational Research Institute; University of California; San Diego California USA
5. Bariatric and Metabolic Institute; University of California; San Diego California USA
6. Division of General Internal Medicine; University of California; San Diego California USA
7. Institute of Diabetes and Metabolic Health; University of California; San Diego California USA