Primary Care Provider and Child Characteristics Associated with Age of Diagnosis of Autism Spectrum Disorder: A Population-Based Cohort Study. - Siddiqua, Ayesha; Janus, Magdalena; Mesterman, Ronit; Duku, Eric; Georgiades, Kathy; Saxena, Farah; Zhao, Haoyu; Saunders, Natasha (Journal of Autism & Developmental Disorders, 2022)