1. Duke Global Health Institute Duke University Durham North Carolina USA
2. Department of Psychiatry and Behavioral Sciences, Duke Center for Autism and Brain Development Duke University School of Medicine Durham North Carolina USA
3. Division of Child and Adolescent Psychiatry, Center for Autism Research in Africa University of Cape Town Cape Town South Africa
4. Department of Communication Sciences and Disorders, College of Health and Sciences North Carolina Central University Durham North Carolina USA
5. Department of Psychiatry and Behavioral Sciences Duke University School of Medicine Durham North Carolina USA
6. Department of Pediatrics Duke University School of Medicine Durham North Carolina USA