1. Institute of Human Genomic Study, School of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
2. Brain Korea 21 Program in Biomedical Science, School of Medicine, Korea University, Anam, Republic of Korea
3. Department of Neurology, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
4. Division of Pulmonary, Critical Care and Sleep Medicine, Beth Israel Deaconess Medical Center, Boston, MA
5. Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
6. Department of Radiology, School of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
7. Stanford University, Department of Psychiatry
8. Division of Pulmonary, Sleep and Critical Care Medicine, Department of Internal Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea