1. From the Telethon Institute of Genetics and Medicine (TIGEM), Naples, Italy;
2. the Department of Ophthalmology, Seconda Universita' degli Studi di Napoli, Naples, Italy;
3. the Department of Ophthalmological Science, Universita' degli Studi di Napoli Federico II, Naples, Italy;
4. the Unit of Child Neurology and Psychiatry, IRCCS (Istituto Ricerca e Cura a Carattere Scientifico) C. Mondino Institute of Neurology, Università di Pavia, Pavia, Italy;
5. the Mother and Child Department, Universita' degli Studi di Brescia, Brescia, Italy;
6. the Department of Surgical Science and Transplantation, Universita' degli Studi di Cagliari, Cagliari, Italy;
7. the Department of Pharmaceutical Sciences, Università di Salerno, Fisciano, Italy;
8. the Institute of Genetics and Biophysics “Adriano Buzzati-Traverso” (IGB), CNR, Naples, Italy; and
9. the Department of Ophthalmology, Università degli Studi di Parma, Parma, Italy.