1. Department of Internal Medicine, Harnett Health System Affiliated with Cape Fear Valley Health System Lillington North Carolina USA
2. Department of Internal Medicine Campbell University Jerry M. Wallace School of Osteopathic Medicine Lillington North Carolina USA
3. Kidzcare Pediatrics Sanford North Carolina USA
4. Department of Statistics North Carolina State University Raleigh North Carolina USA
5. Department of Pediatrics, Division of Pediatric Critical Care Medicine University of Mississippi Medical Center Jackson Mississippi USA
6. Department of Internal Medicine Mayo Clinic Rochester Minnesota USA
7. Department of Gastroenterology and Hepatology Mayo Clinic Rochester Minnesota USA
8. Department of Internal Medicine Temple University Hospital Philadelphia Pennsylvania USA