1. Department of Internal Medicine and Endocrinology, Fattouma Bourguiba University Hospital, Monastir, Tunisia
2. Faculty of Medicine, University of Monastir, Monastir, Tunisia
3. Department of Ophthalmology, St-Pierre and Brugmann University Hospitals, Brussels, Belgium
4. Department of Ophthalmology, Fattouma Bourguiba University Hospital, Monastir, Tunisia
5. Department of Ophthalmology, St-Pierre University Hospital, Université Libre de Bruxelles, Bruxelles, Belgium