1. Department of Internal Medicine; Division of Endocrinology and Metabolism; Academic Medical Centre; University of Amsterdam; Amsterdam; The Netherlands
2. Reference Centre for Lysosomal Diseases; Beaujon Hospital; Assistance Publique-Hôpitaux de Paris; Clichy; France
3. Genzyme, a Sanofi Company; Cambridge; MA; USA
4. Department of Internal Medicine; St Franziskus Hospital; Teaching Hospital; University of Cologne; Cologne; Germany
5. Department of Medicine; Addenbrooke's Hospital; Cambridge; UK
6. Genetic Services of Western Australia; School of Paediatrics and Child Health; University of Western Australia; Perth; WA; Australia
7. Tower Hematology Oncology Medical Group; Beverly Hills; CA; USA
8. Department of Metabolic Diseases; The Children's Memorial Health Institute; Warsaw; Poland
9. University Research Foundation for Lysosomal Storage Disorders; Coral Springs; FL; USA
10. Gaucher Clinic; Shaare Zedek Medical Centre; Hebrew University; Jerusalem; Israel
11. Department of Internal Medicine; “Ca Granda” Policlinico Foundation IRCCS; University of Milan; Milan; Italy