1. Unit of Inherited Metabolic Diseases and Neuropediatrics, Department of Pediatrics, Hospital Universitari Germans Trias i Pujol, 08916 Badalona, Spain
2. Department of Pediatrics, Facultat de Medicina, Universitat Autònoma de Barcelona, Campus Can Ruti, 08916 Badalona, Spain
3. Rare Diseases & Pediatric Medicine Research Group, Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36312 Vigo, Spain
4. Internal Medicine Department, Complejo Hospitalario Universitario de Vigo, 36312 Vigo, Spain