1. Royal Liverpool University Hospital; Ophthalmology; Prescot Street Liverpool UK L7 8XP
2. ULSS 20 Verona; Center of Community Medicine and Infectious Diseases Service; Via Germania, 20 Verona Italy 37135
3. private practice; Clinica Stabia; Viale Europa Castellammare di Stabia Italy
4. Hospital of Arcispedale Santa Maria Nuova; Ophthalmology; Viale Risorgimento Reggio-Emilia Italy