1. College of Medicine, Medical University of South Carolina, Charleston, South Carolina, USA
2. Department of Ophthalmology & Department of Internal Medicine, Medical University of South Carolina, Charleston, South Carolina, USA
3. Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina, USA
4. College of Medicine, University of Louisville, Louisville, South Carolina, USA
5. Department of Ophthalmology, Medical University of South Carolina, Charleston, South Carolina, USA
6. Department of Ophthalmology, University of Louisville, Louisville, Kentucky, USA