Nygaard, Egil Longitudinal cognitive development of children born to mothers with opioid and polysubstance use. [electronic resource] - Pediatric research Sep 2015 - 330-5 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1530-0447 Standard No.: 10.1038/pr.2015.95 doi Subjects--Topical Terms: Analgesics, Opioid--adverse effectsChildChild Development--drug effectsChild, PreschoolCognition--drug effectsDevelopmental Disabilities--etiologyFemaleHumansInfantIntelligence TestsLongitudinal StudiesMaleMaternal ExposureNeuropsychological TestsPregnancyPregnancy ComplicationsPrenatal Exposure Delayed Effects--diagnosisRegression AnalysisSex FactorsSubstance-Related Disorders