All links accessed January 1 2022

1. National Autistic Society. https://www.autism.org.uk/
2. NICE Clinical guideline CG128. ‘Autism spectrum disorder in under 19s: recognition, referral and diagnosis’. Published September 2011, last updated December 2017. https://www.nice.org.uk/guidance/cg128
3. NICE. Clinical guideline CG142. Autism spectrum disorder in adults: diagnosis and management. Published June 2012, last updated June 2021. https://www.nice.org.uk/guidance/cg142
4. Autistica. https://www.autistica.org.uk/
5. Ambitious about Autism. https://www.ambitiousaboutautism.org.uk/
6. NHS Health A to Z. ‘What is autism?’. Page last reviewed April 2019. https://www.nhs.uk/conditions/autism/what-is-autism/
7. D Gonçalves et al. ‘Etiological Investigation of Autism Spectrum Disorders – State of The Art’. Nascer e Crescer - Birth and Growth Medical Journal. October 17 2018. 27;3:176–181. https://revistas.rcaap.pt/nascercrescer/article/view/12106
8. Autism Speaks. https://www.autismspeaks.org/
9. H Gardener et al. ‘Prenatal risk factors for autism: comprehensive meta-analysis’. BJPsych. January 2 2018. 195;1:7-14. https://www.cambridge.org/core/journals/the-british-journal-of-psychiatry/article/prenatal-risk-factors-for-autism-comprehensive-metaanalysis/0D63EE57942E9A0CC312EA30025A9DD2
10. MS Durkin et al. ‘Advanced Parental Age and the Risk of Autism Spectrum Disorder’. American Journal of Epidemiology. December 1 2008. 168;11:1268–1276. https://academic.oup.com/aje/article/168/11/1268/121274
11. S Alemany et al. ‘Prenatal and postnatal exposure to acetaminophen in relation to autism spectrum and attention-deficit and hyperactivity symptoms in childhood: Meta-analysis in six European population-based cohorts’. European Journal of Epidemiology. Published online May 28 2021.36:993–1004. https://link.springer.com/article/10.1007/s10654-021-00754-4
12. KK Wiggs et al. ‘Antiseizure medication use during pregnancy and risk of ASD and ADHD in children’. Neurology. December 15 2020. 95;24: e3232-e3240. https://n.neurology.org/content/95/24/e3232.long
13. O Kapra et al. ‘The Association Between Prenatal Exposure to Antidepressants and Autism: Some Research and Public Health Aspects’. Front. Psychiatry. Published online November 23 2020. Vol 11. Article 555740. https://www.frontiersin.org/articles/10.3389/fpsyt.2020.555740/full
14. SE Maloney et al. ‘Antidepressants, Pregnancy, and Autism: Setting the Record(s) Straight’. Am J Psych. June 1 2020. 177;6:479-481. https://ajp.psychiatryonline.org/doi/10.1176/appi.ajp.2020.20040418
15. US Centers for Disease Control and Prevention. Vaccine Safety. Autism and Vaccines. Page last reviewed December 1 2021. https://www.cdc.gov/vaccinesafety/concerns/autism.html
16. R Schmidt et al. ‘Prenatal Vitamins, One-carbon Metabolism Gene Variants, and Risk for Autism’. Epidemiology. July 2011. 22;4:476-485. https://journals.lww.com/epidem/Fulltext/2011/07000/Prenatal_Vitamins,_One_carbon_Metabolism_Gene.8.aspx
17. NICE. Clinical guideline CG170. Published August 2013, last updated June 2021. https://www.nice.org.uk/guidance/cg170
18. Department for Education/Department of Health and Social Care. Policy paper: ‘The national strategy for autistic children, young people and adults: 2021 to 2026’. Updated 22 July 2021. https://www.gov.uk/government/publications/national-strategy-for-autistic-children-young-people-and-adults-2021-to-2026/the-national-strategy-for-autistic-children-young-people-and-adults-2021-to-2026
19. Skills for Health. ‘Supporting autistic people and/or people with a learning disability’. https://skillsforhealth.org.uk/info-hub/learning-disability-and-autism-frameworks-2019/