1. Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts, USA
2. Department of Ophthalmology, Hanyang University Medical College, Seoul, Republic of Korea
3. Department of Ophthalmology, Boston University School of Medicine, Boston, Massachusetts, USA
4. Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Republic of Korea
5. Infectious Disease Unit, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA