[1] IRCCS Azienda Osped Univ Bologna, Ophthalmol Unit, I-40138 Bologna, Italy
[2] Univ Modena & Reggio Emilia, Dept Surg Med Dent & Morphol Sci, I-41100 Modena, Italy
[3] Azienda USL IRCCS, Ocular Immunol Unit, I-42123 Reggio Emilia, Italy
[4] Univ Brescia, Dept Med & Surg Specialties, Ophthalmol Clin, Radiol Sci & Publ Hlth, I-25121 Brescia, Italy