title: Correspondence section.
authors.affiliation: Division of Pediatric Gastroenterology and Nutrition, UCLA Medical Center, 10833 le Conte Avenue, Los Angeles, California 90024-1752, USA.
authors.forename: A L
authors.initials: AL
authors.lastname: Buchman
authors.forename: M E
authors.initials: ME
authors.lastname: Ament
authors.forename: L
authors.initials: L
authors.lastname: Reyen
authors.forename: F
authors.initials: F
authors.lastname: Herzog
authors.forename: M
authors.initials: M
authors.lastname: Alvarez