title: Reply.
authors.affiliation: Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania.
authors.forename: Nikhil R
authors.initials: NR
authors.lastname: Thiruvengadam
authors.affiliation: Gastroenterology Division and Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, Philadelphia, Pennsylvania.
authors.forename: Kimberly A
authors.initials: KA
authors.lastname: Forde
authors.affiliation: Gastroenterology Division, Perelman School of Medicine, Philadelphia, Pennsylvania.
authors.forename: Vinay
authors.initials: V
authors.lastname: Chandrasekhara
authors.affiliation: Gastroenterology Division, Perelman School of Medicine and Center for Endoscopic Innovation, Research and Training, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania.
authors.forename: Michael L
authors.initials: ML
authors.lastname: Kochman