1. Kennedy Krieger Institute; Down Syndrome Clinic & Research Center; Baltimore Maryland
2. Advocate Adult Down Syndrome Center; Park Ridge Illinois
3. Montefiore Hospital; Adult Down Syndrome Clinic; Pittsburgh Pennsylvania
4. Christiana Care Health System; Adult Down Syndrome Clinic; Wilmington Delaware
5. Duke University Medical Center; Durham North Carolina
6. The Adult Disability Medical Home; Urban Family Practice; Marietta Georgia
7. Rainbow Babies and Children's Hospital; Cleveland Ohio
8. Division of Developmental and Behavioral Pediatrics, Cincinnati Children's Hospital Medical Center; Jane and Richard Thomas Center for Down Syndrome; Cincinnati Ohio
9. University of Kansas Medical Center; Adults with Down Syndrome Specialty Clinic; Kansas City Kansas
10. Nationwide Children's Hospital; Columbus Ohio
11. Division of General Internal Medicine; University of Colorado Anschutz Medical Campus; Aurora Colorado
12. Children's Hospital of Wisconsin; Down Syndrome Clinic of Wisconsin; Milwaukee Wisconsin