Copyright © 2013 American Medical Association. All rights reserved. From: Association Between Maternal Use of Folic Acid Supplements and Risk of Autism Spectrum Disorders in Children JAMA. 2013;309(6):570-577. doi:10.1001/jama.2012.155925 Figure Legend: Approximately 283 000 children were invited to participate in the Norwegian Mother and Child Cohort Study; of these, approximately 174 000 declined to participate. ASD indicates autism spectrum disorder. aNumbers sum to more than 12 003 because some children met more than 1 exclusion criterion. Date of download: 11/14/2017 Copyright © 2013 American Medical Association. All rights reserved.

Copyright © 2013 American Medical Association. All rights reserved. From: Association Between Maternal Use of Folic Acid Supplements and Risk of Autism Spectrum Disorders in Children JAMA. 2013;309(6):570-577. doi:10.1001/jama.2012.155925 Date of download: 11/14/2017 Copyright © 2013 American Medical Association. All rights reserved.