1. Department of Paediatrics The Chinese University of Hong Kong Hong Kong China
2. Joint BCM‐CUHK Center of Medical Genetics Chinese University of Hong Kong Hong Kong China
3. Department of Molecular and Human Genetics Baylor College of Medicine Houston Texas USA
4. Department of Obstetrics and Gynecology The Chinese University of Hong Kong Hong Kong China
5. Unidad de Metabolismo, Hospital de Niños Ricardo Gutiérrez Buenos Aires Argentina
6. Division of Medical Genetics A. I. du Pont Hospital for Children/Nemours Wilmington Delaware USA
7. Division of Genetic and Metabolic Disorders, Departments of Pediatrics Tawam Hospital Al Ain United Arab Emirates
8. Department of Clinical Sciences College of Medicine, University of Sharjah Sharjah United Arab Emirates
9. Division of Neurology, Department of Pediatrics Tawam Hospital Al Ain United Arab Emirates
10. Department of Pediatrics College of Medicine and Health Sciences, United Arab Emirates University Al Ain United Arab Emirates
11. Neurology and Developmental Neuroscience Baylor College of Medicine, Neurology Service, Texas Children's Hospital Houston Texas USA
12. Division of Child Neurology, Department of Pediatrics McGovern Medical School Houston Texas USA
13. Department of Ophthalmology Baylor College of Medicine Houston Texas USA
14. Texas Children's Hospital Houston Texas USA
15. Baylor Genetics Houston Texas USA
16. Department of Medical and Molecular Genetics Indiana University School of Medicine Indianapolis Indiana USA