1. Children's Hospital of Pittsburgh, USA
2. University of South Carolina, USA
3. Cure Sanfilippo Foundation, USA
4. Universidade Federal do Rio Grande do Sul, Brasil; Instituto Nacional de Ciência e Tecnologia de Genética Médica Populacional, Brasil
5. Centro Universitário Estácio de Ribeirão Preto, Brasil
6. University of Mississippi Medical Center, USA
7. University Medical Center Hamburg-Eppendorf, Germany
8. Great Ormond Street Hospital NHS Foundation Trust, United Kingdom
9. RTI International, USA
10. Autonomous Collaborator, USA
11. Fundación Cardio-Infantil, Colombia
12. Greenwood Genetics Center, USA
13. University of Alberta, Canada