title: Who are all the children?
mesh_terms: D002648:Child; D002651:Child Advocacy; D002671:Child, Exceptional; D006233:Persons with Disabilities; D004495:Education of Persons with Intellectual Disabilities / Q000266:history; D004519:Education, Special / Q000266:history*; D006666:History of Medicine; D006801:Humans; D014481:United States