title: US Supreme Court rules that execution of defendants with mental retardation is unconstitutional.
authors.affiliation: Tennessee Department of Mental Health and Developmental Disabilities, Nashville, USA.
authors.forename: Judy
authors.initials: J
authors.lastname: Regan
authors.forename: Ann
authors.initials: A
authors.lastname: Alderson
mesh_terms: D002203:Capital Punishment / Q000331:legislation & jurisprudence*; D006801:Humans; D008607:Intellectual Disability; D014481:United States