1. Unit for the Diagnosis and Treatment of Congenital Metabolic Diseases, Clinical University Hospital of Santiago de Compostela, Health Research Institute of Santiago de Compostela, Santiago de Compostela; Galicia Spain
2. Centro de Investigación Biomédica de Enfermedades Raras, Instituto de Salud Carlos III; Madrid Spain
3. Department of Pharmacology; Emory University School of Medicine, Rollins Research Center; Atlanta Georgia USA
4. Unit of Child Neurology, Department of Pediatrics, Hospital Infantil Universitario Niño Jesús de Madrid; Madrid Spain
5. Department of Neurology; the First Hospital of Shanxi Medical University; Taiyuan China
6. Center for Functional Evaluation of Rare Variants; Emory University School of Medicine; Atlanta Georgia USA