185. Is it possible to specify the prevalence of CLE in esophagitis?
AJ. Cameron (Rochester)

186. What is the cell line giving rise to the columnar mucosa?
PJ. Kahrilas (Chicago)

187. What is the prevalence of Barrett's mucosa in children and young adults? Do these groups carry particular risk factors?
E. Hassall (Vancouver)

188. Does Barrett's mucosa develop in children not suffering from reflux?
E. Hassall (Vancouver)

189. What factors suggest a genetic origin for this disorder?
5.J. Sontag (Hines, Illinois)