1. Advanced Institute of Aging Science, Chonnam National University, Gwangju, Korea
2. Department of Radiology, Chonnam National University Medical School, Gwangju, Korea
3. Department of Psychiatry, Jeonuk National University Medical School, Jeonju, Korea
4. Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea