1. From the Center for Esophageal Diseases and Swallowing, University of North Carolina School of Medicine, Chapel Hill (E.S.D.); Cincinnati Children’s Hospital Medical Center and University of Cincinnati College of Medicine, Cincinnati (M.E.R., M.H.C.); Northwestern University Feinberg School of Medicine, Chicago (I.H.); Mount Sinai Center for Eosinophilic Disorders, Icahn School of Medicine at Mount Sinai, New York (M.C.), and Regeneron Pharmaceuticals, Tarrytown (X.S., M.P.K., M.A.K., J.D.H., B.B., E.M.,...