Division of Gastroenterology and Hepatology, Mayo Clinic, Scottsdale,AZ 85259,United States;
Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, GI Outcomes Unit, Departments of Gastroenterology and Ambulatory Care Services, Rambam Health Care Campus;
The Neocure Group, Sherborn,MA 01770, United States;
Division of Health Policy, Departments of Radiology and Economics, University of California San Diego,San Diego, CA 92103,United States;