1. Department of Otorhinolaryngology-Head and Neck Surgery , College of Medicine; Korea University; Seoul Korea
2. Division of Pulmonary, Critical Care and Sleep Medicine ; Beth Israel Deaconess Medical Center; Boston Massachusetts U.S.A.
3. Department of Psychology ; Sungshin Women's University; Seoul Korea
4. Department of Psychiatry ; Stanford University; Palo Alto California U.S.A.
5. Department of Neurology , Bundang Clinical Neuroscience Institute; Seoul National University Bundang Hospital; Seongnam Korea