Comment on

• Association between maternal use of folic acid supplements and risk of autism spectrum disorders in children.

  Surén P, Roth C, Bresnahan M, Haugen M, Hornig M, Hirtz D, Lie KK, Lipkin WI, Magnus P, Reichborn-Kjennerud T, Schjølberg S, Davey Smith G, Øyen AS, Susser E, Stoltenberg C. Surén P, et al. JAMA. 2013 Feb 13;309(6):570-7. doi: 10.1001/jama.2012.155925. JAMA. 2013. PMID: 23403681 Free PMC article.
• Maternal folic acid supplementation and risk of autism.

  Vahabzadeh A, McDougle CJ. Vahabzadeh A, et al. JAMA. 2013 Jun 5;309(21):2208. doi: 10.1001/jama.2013.4876. JAMA. 2013. PMID: 23736720 No abstract available.