1. Institute of Genetic Medicine, MRC Centre for Neuromuscular Diseases, Newcastle University, Newcastle upon Tyne, UK
2. Department of Biosciences, Biotechnology and Biopharmaceutics, University of Bari Aldo Moro, Bari, Italy
3. Monique and Jacques Roboh Department of Genetic Research, Hadassah, Hebrew University Medical Center, Jerusalem, Israel
4. Neurosciences Group, Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Headley Way, Oxford, UK
5. Medizinisch Genetisches Zentrum, Munich, Germany
6. Friedrich-Baur-Institut, Ludwig Maximilians University, Munich, Germany
7. Children's Hospital, Technical University Dresden, Dresden, Germany
8. Department of Clinical Neurology. The John Radcliffe, Oxford, UK
9. CNR Institute of Biomembranes and Bioenergetics, Bari, Italy