Down Syndrome (Trisomy 21)

• Reference Center of Rare Disease with Intellectual Disability in Lyon, Woman Mother and Child Hospital, University Hospital of Lyon, Hospices Civils de Lyon — Bron, France

• Valley Perinatal Services — Phoenix, Arizona, United States
• San Gabriel Valley Perinatal Medical Group — West Covina, California, United States
• Sarasota Memorial Health Care System — Sarasota, Florida, United States
• Pediatrix Medical Group of Georgia — Atlanta, Georgia, United States

• University of Nevada Las Vegas - UNLV — Las Vegas, Nevada, United States

• CHU de Bordeaux — Bordeaux, France
• Genetics department, Hospices Civils de Lyon — Lyon, France
• Service Génétique Médicale, CHU de Montpellier — Montpellier, France
• Genetics department, Institut Jérôme Lejeune — Paris, France

• Service d'épileptologie clinique, des troubles du sommeil et de neurologie fonctionnelle de l'enfant — Bron, France

• Ability and Beyond — The Woodlands, Texas, United States

• University of Alabama at Birmingham — Birmingham, Alabama, United States

• Hospital Virgen de las Nieves — Granada, Andalusia, Spain
• Fundación CITA Alzheimer — Donostia / San Sebastian, Basque Country, Spain
• Hospital Universitario Marqués de Valdecilla — Santander, Cantabria, Spain
• Hospital de la Santa Creu i Sant Pau — Barcelona, Catalonia, Spain

• Hôpital Femme-Mère-Enfant, Service d'épileptologie clinique, des troubles du sommeil et de neurologie fonctionnelle de l'enfant — Bron, France

Not specified