1. Department of Neurology Samsung Medical Center, Sungkyunkwan University School of Medicine Seoul Republic of Korea
2. Neuroscience Center, Samsung Medical Center Seoul Republic of Korea
3. Department of Neurosurgery Samsung Medical Center, Sungkyunkwan University School of Medicine Seoul Republic of Korea
4. Edmond J. Safra Program in Parkinson's Disease, Morton and Gloria Shulman Movement Disorders Clinic, Toronto Western Hospital, University Health Network Toronto Ontario Canada
5. Division of Neurology University of Toronto Toronto Ontario Canada
6. Krembil Brain Institute, Neuroscience Toronto Ontario Canada
7. Department of Cardiology Samsung Medical Center, Sungkyunkwan University School of Medicine Seoul Republic of Korea