[1] CNR, Int Inst Genet & Biophys, I-80125 Naples, Italy
[2] Univ Naples 2, Eye Clin, Naples, Italy
[3] Hosp Sant Pau, Mol Genet Unit, Barcelona, Spain
[4] Hosp Virgen Rocio, Med Genet Unit, Seville, Spain
[5] Univ Rome La Sapienza, Dipartimento Genet Med, Rome, Italy
[6] Univ Pavia, Dip Patol, I-27100 Pavia, Italy