1. Department of Biology University of Pisa, Pisa, Italy
2. Department of Chemical Sciences, University of Napoli Federico II, Napoli, Italy
3. Department of Clinical Neurosciences, Section of Ophthalmology and Vision, St. Erik Hospital, Karolinska Institute, Stockholm, Sweden
4. Sooft Italia Spa, Montegiorgio, Italy
5. Department of Experimental Medicine, Second University of Napoli, Napoli, Italy