van de Wouw, E Prevalence, associated factors and treatment of sleep problems in adults with intellectual disability: a systematic review. [electronic resource] - Research in developmental disabilities - 1310-32 p. digital Publication Type: Journal Article; Review; Systematic Review ISSN: 1873-3379 Standard No.: 10.1016/j.ridd.2012.03.003 doi Subjects--Topical Terms: AdultHumansIntellectual Disability--epidemiologyPrevalenceRisk FactorsSleep Wake Disorders--epidemiology