1. Divison of Gastroenterology, Department of Medicine, NYU Grossman School of Medicine , New York, NY , USA
2. Department of Medicine, NYU Grossman School of Medicine , New York, NY , USA
3. Cleveland Clinic Lerner College of Medicine of Case Western Reserve University , Cleveland, OH , USA
4. Divison of Gastroenterology, Department of Medicine, University of Vermont Larner College of Medicine , Burlington, VT , USA
5. Department of Medical Epidemiology and Biostatistics, Karolinska Institute , Stockholm , Sweden
6. Department of Colorectal Surgery, Cleveland Clinic , Cleveland, OH , USA
7. Divison of Gastroenterology, Department of Medicine, UNC School of Medicine , Chapel Hill, NC , USA
8. Department of Gastroenterology, Hepatology, and Nutrition, Cleveland Clinic , Cleveland, OH , USA
9. Department of Surgery, NYU Grossman School of Medicine , New York, NY , USA