title: A collaborative effort to define the epidemiology of pediatric inflammatory bowel disease: what can we learn from children with early-onset disease?
authors.forename: M Susan
authors.initials: MS
authors.lastname: Moyer
mesh_terms: D000293:Adolescent; D017668:Age of Onset; D002648:Child; D002675:Child, Preschool; D003093:Colitis, Ulcerative / Q000453:epidemiology*; D003424:Crohn Disease / Q000453:epidemiology*; D006801:Humans