Affiliation: | aCurrent affiliations: Division of Gastroenterology and Hepatology, Developmental Endoscopy Unit (E.R., C.J.G., K.S., T.A.B., M.A.K.), and Enteric NeuroSciecne Program (M.S.L, N.J.T., G.R.L., L.A.S., G.J.S., G.F.), Mayo Clinic College of Medicine, Rochester, Minnesota, USA |