Haglund, Nils, SvenOlof Dahlgren, Karin Källén, Peik Gustafsson, and Maria Råstam. 2016. “The Observation Scale for Autism (OSA): A New Screening Method to Detect Autism Spectrum Disorder before Age Three Years”. Journal of Intellectual Disability - Diagnosis and Treatment 3 (4):230-37. https://doi.org/10.6000/2292-2598.2015.03.04.9.