title: Prevalence of Prader-Willi and Angelman syndromes among mentally retarded boys in Brazil.
authors.forename: A M
authors.initials: AM
authors.lastname: Vercesi
authors.forename: M R
authors.initials: MR
authors.lastname: Carvalho
authors.forename: M J
authors.initials: MJ
authors.lastname: Aguiar
authors.forename: S D
authors.initials: SD
authors.lastname: Pena
mesh_terms: D017204:Angelman Syndrome / Q000453:epidemiology* / Q000235:genetics*; D001938:Brazil / Q000453:epidemiology; D002648:Child; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D008297:Male; D016133:Polymerase Chain Reaction / Q000379:methods; D011218:Prader-Willi Syndrome / Q000453:epidemiology* / Q000235:genetics*