1. Department of Ophthalmology, Innsbruck Medical University, Innsbruck, Austria.
2. Department of Hygiene, Microbiology and Social Medicine, Division of Hygiene and Medical Microbiology, Innsbruck Medical University, Innsbruck, Austria.
3. Mitsubishi Kagaku Bio-Clinical Laboratories, Inc., Tokyo, Japan.
4. Department of Medical Statistics, Informatics, and Health Economics, Innsbruck Medical University, Innsbruck, Austria.
5. Department of Ophthalmology, Yokohama City University School of Medicine, Yokohama, Japan.
6. Department of Ophthalmology and Visual Sciences, Hokkaido University Graduate School of Medicine, Sapporo, Japan.