1. University of Florence; Department of Translational Surgery and Medicine, Eye Clinic; Largo Brambilla, 3 Florence Italy 50134
2. Fondazione G.B. Bietti per lo studio e la ricerca in Oftalmolologia-IRCCS; Ophthalmology; Via Livenza n 3 Rome Italy 00198
3. London School of Hygiene & Tropical Medicine; Cochrane Eyes and Vision, ICEH; Keppel Street London UK WC1E 7HT
4. University of Florence; Department of Neurosciences, Psychology, Drug Research and Children’s Health; viale Gaetano Pieraccini, 6 Florence Italy 50139