title: Trends and milestones.
authors.forename: K C
authors.initials: KC
authors.lastname: Lakin
authors.forename: D
authors.initials: D
authors.lastname: Braddock
authors.forename: G
authors.initials: G
authors.lastname: Smith
mesh_terms: D006801:Humans; D008607:Intellectual Disability; D008605:Mental Health Services / Q000191:economics*; D012112:Residential Facilities; D012114:Residential Treatment / Q000191:economics; D014481:United States