1. Unit of Molecular Neurogenetics; Fondazione IRCCS (Istituto di Ricovero e Cura a Carattere Scientifico) Istituto Neurologico “Carlo Besta”; Milan Italy
2. Institute of Human Genetics; Helmholtz Zentrum München; Neuherberg Germany
3. Institute of Human Genetics; Technische Universitat München; Munich Germany
4. Department of Life Sciences; University of Parma; Parma Italy
5. Unit of Child Neurology; Fondazione IRCCS Istituto Neurologico “Carlo Besta”; Milan Italy
6. Department of Pediatrics; University of Siena; Siena Italy
7. MRC Mitochondrial Biology Unit; Cambridge United Kingdom