1. Department of Laboratory Medicine, Chonnam National University Hwasun Hospital, Hwasun, Korea.
2. Department of Clinical Pathology, Gwangyang Health College, Gwangyang, Korea.
3. Brain Korea 21 Project, Center for Biomedical Human Resources, Chonnam National University, Gwangju, Korea.
4. Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, Korea.