1. Department of Ophthalmology, Villa Anna Hospital, San Benedetto del Tronto, AP, Italy
2. Department of Ophthalmology, Pordenone Hospital, ASFO, Pordenone, PN, Italy
3. Department of Ophthalmology, De Gironcoli Hospital, AULSS2 Marca Trevigiana, Conegliano, TV, Italy
4. Department of Ophthalmology, Arcispedale Santa Maria Nuova, IRCCS, Reggio Emilia (RE), Italy