1 Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Naples, Italy; Medical Genetics Unit, Department of Medical and Translational Science, Federico II University, Naples, Italy.
2 Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Naples, Italy; Medical Genetics Unit, Department of Medical and Translational Science, Federico II University, Naples, Italy. Electronic address: g.napolitano@tigem.it.