1. Mitochondrial Medicine Laboratory, Department of Medical Biotechnology and Translational Medicine University of Milan, Milan, Italy
2. Unit of Medical Genetics and Neurogenetics Fondazione IRCCS Istituto Neurologico "C. Besta", Milan, Italy
3. Max Delbrück Center for Molecular Medicine (MDC), Berlin, Germany
4. Department of General Pediatrics, Neonatology and Pediatric Cardiology, Medical Faculty Heinrich Heine University, Düsseldorf, Germany