1 Serviço de Pediatria, Centro Hospitalar de Leiria, Hospital de Santo André Leiria, Portugal ; Neuromuscular Unit, Neuropaediatrics Department, Hospital Sant Joan de Déu Barcelona, Spain.
2 Wellcome Trust Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University Newcastle upon Tyne, UK.
3 Neuromuscular Unit, Neuropaediatrics Department, Hospital Sant Joan de Déu Barcelona, Spain ; Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos III Barcelona, Spain.
4 Neuromuscular Unit, Neuropaediatrics Department, Hospital Sant Joan de Déu Barcelona, Spain.
5 Diagnosis and Treatment Unit for Inborn Errors of Metabolism, Hospital Clínico Universitario de Santiago de Compostela La Coruña, Spain.
6 Progenika Biopharma a Grifols Company Derio, Spain.
7 Pathology Department, Hospital Sant Joan de Déu Esplugues Barcelona, Spain.
8 Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos III Barcelona, Spain ; Biochemical, Genetics and Rett Unit, Laboratory Department, Hospital Sant Joan de Déu Esplugues Barcelona, Spain.
9 Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos III Barcelona, Spain ; Biochemical Department, Hospital Sant Joan de Déu Esplugues Barcelona, Spain.
10 Cluster of Excellence, Cellular Stress Responses in Aging-Associated Diseases, Institute for Genetics, University of Cologne Cologne, Germany.
11 Cluster of Excellence, Cellular Stress Responses in Aging-Associated Diseases, Institute for Genetics, University of Cologne Cologne, Germany ; German Network for Mitochondrial Disorders Munich, Germany.