[1] University of North Carolina School of Medicine,Center for Esophageal Diseases and Swallowing, and Center for Gastrointestinal Biology and Disease, Division of Gastroenterology and Hepatology, Department of Medicine
[2] Wake Forest School of Medicine,Division of Pediatric Gastroenterology, Department of Pediatrics
[3] Medical Center Boulevard,Department of Pathology and Laboratory Medicine
[4] University of Kentucky School of Medicine,Division of Public Health Sciences, Department of Epidemiology, and Prevention
[5] Wake Forest University School of Medicine,undefined
[6] Medical Center Boulevard,undefined