1. Clinical Enteric Neuroscience Translational and Epidemiological Research, Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
2. Clinical Enteric Neuroscience Translational and Epidemiological Research, Division of Gastroenterology and Hepatology, Mayo Clinic, Charlton Bldg., Rm. 8-110, 200 First Street S.W., Rochester, MN 55905, USA