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Virk, Jasveer; Liew, Zeyan; Olsen, Jørn; Nohr, Ellen A.; Catov, Janet M.; Ritz, Beate – Autism: The International Journal of Research and Practice, 2016
Objective: To evaluate whether early folic acid supplementation during pregnancy prevents diagnosis of autism spectrum disorders in offspring. Methods: Information on autism spectrum disorder diagnosis was obtained from the National Hospital Register and the Central Psychiatric Register. We estimated risk ratios for autism spectrum disorders for…
Descriptors: Autism, Pervasive Developmental Disorders, Pregnancy, Nutrition