John G McCarthy1, Joseph G Cheatham2, Manish Singla3. 1. Gastroenterology Service, Department of Internal Medicine, Walter Reed National Military Medical Center, Bethesda, Maryland; Uniformed Service University of the Health Sciences, Bethesda, Maryland. 2. Uniformed Service University of the Health Sciences, Bethesda, Maryland; Gastroenterology Service, Department of Internal Medicine, Naval Medical Center San Diego, San Diego, California. 3. Gastroenterology Service, Department of Internal Medicine, Walter Reed National Military Medical Center, Bethesda, Maryland; Uniformed Service University of the Health Sciences, Bethesda, Maryland. Electronic address: manishsingla@gmail.com.