1. Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Naples 80078, Italy.
2. Medical Genetics, Department of Translational Medicine, Federico II University, Naples 80131, Italy.
3. Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030.
4. Jan and Dan Duncan Neurological Research Institute, Texas Children Hospital, Houston, TX 77030.
5. San Raffaele Telethon Institute for Gene Therapy (TIGET), San Raffaele Scientific Institute, Milan 20132, Italy.
6. Vita Salute San Raffaele University, Milan 20132, Italy.