1. Department of Ophthalmology, University of Padova, Padova, Veneto, Italy
2. Department of Ophthalmology, Vito Fazzi Hospital, Lecce, Puglia, Italy
3. Villa Erbosa di Bologna, Bologna, Emilia-Romagna, Italy
4. Department of Ophthalmology, Istituto Clinico S. Anna, Brescia, Lombardia, Italy
5. Eyecare Clinic, Brescia, Italy