1. Immunization Project, Texas Children’s Hospital, Houston, TX, USA
2. Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
3. Department of Psychological, Health, and Learning Sciences, University of Houston, Houston, TX, USA
4. Autism Center, Texas Children’s Hospital, Houston, TX, USA
5. Dan L. Duncan Institute for Clinical and Translational Research, Baylor College of Medicine, Houston, TX, USA