1. From the Ophthalmology Section, Head and Neck Department, University of Parma, Parma, Italy;
2. Departments of Biomedical Sciences and
3. Pure and Applied Mathematics, University of Modena and Reggio Emilia, Modena, Italy;
4. Institute of Ophthalmology, University Vita-Salute, San Raffaele Hospital, Milano, Italy; and
5. Doheny Eye Institute, Keck School of Medicine, University of Southern California, Los Angeles, California.