1. Department of Regenerative and Reconstructive Medicine (Ophthalmology), Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama, Japan
2. Center for Innovative Clinical Medicine, Okayama University Hospital, Okayama University, Okayama, Japan
3. Department of Epidemiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
4. Department of Health Economics and Policy, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan