title: Reply.
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois.
authors.forename: Leila
authors.initials: L
authors.lastname: Kia
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois.
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Kahrilas
mesh_terms: D015415:Biomarkers; D005764:Gastroesophageal Reflux; D006801:Humans
chemical_list: D015415:Biomarkers