1. Division of Child and Adolescent Neurology, Departments of Neurology, Pediatrics and Medical Genetics Mayo Clinic Rochester Minnesota USA
2. Department of Chemistry and Chemical Biology University of New Mexico Albuquerque New Mexico USA
3. Medical Genetics Service Porto Alegre Brazil
4. Department of Genetics UFRGS Porto Alegre Brazil
5. Niemann‐Pick UK Washington UK
6. Department of Institute of Inherited Metabolic Disorders Charles University Prague Czech Republic
7. Department of Pediatrics University of Arizona Tucson Arizona USA
8. Department of Neurology Reference Center for Lysosomal Diseases (CRML), Hôpital de la Pitié‐Salpêtrière Paris France
9. INSERM Lyon France
10. Hopitaux de Lyon Lyon France
11. Global Business and Science Affairs Actelion Pharmaceuticals Ltd. Allschwil Switzerland
12. Epidemiology and Observational Studies, Actelion Pharmaceuticals Ltd., Allschwil Switzerland
13. Azafaros B.V, Leiden The Netherlands
14. Sorbonne Universite Paris France
15. Idorsia Pharmaceuticals Ltd. Allschwil Switzerland
16. Department of Neuropediatrics, CRML, Hopital Armand‐Trousseau Paris France