1. Department of Psychiatry, Chonnam National University Hospital, Gwangju, Korea
2. Department of Preventive Medicine, Chonnam National University Medical School, Hwasun, Korea
3. Advanced Institute of Aging Science, Chonnam National University, Gwangju, Korea
4. Department of Ophthalmology, Chonnam National University Medical School, Gwangju, Korea
5. College of Nursing, Chonnam National University, Gwangju, Korea
6. Department of Family Environment and Welfare, Chonnam National University, Gwangju, Korea
7. Department of Urology, Chonnam National University Medical School, Gwangju, Korea