1. Ophthalmology Unit, San Bortolo Hospital, 36100 Vicenza, Italy
2. Department of Ophthalmology, Schepens Eye Research Institute of Mass Eye and Ear, Harvard Medical School, Boston, MA 02115, USA
3. Fondazione Banca degli Occhi del Veneto Onlus, 30174 Venice, Italy
4. Ophthalmology Unit, IRCCS, Azienda Ospedaliero-Universitaria, 40138 Bologna, Italy
5. Department of Ophthalmology and Visual Sciences, University of British Columbia, Vancouver, BC V5Z 1L3, Canada