1. Department of Epidemiology and Public Health, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
2. Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
3. Department of Ophthalmology and Visual Sciences, Tokyo Medical and Dental University, Tokyo, Japan
4. Center for Cohort Studies, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan