1. Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
2. Department of Neurology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
3. Cardiology Division, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
4. Severance Institute for Vascular and Metabolic Research, Yonsei University, Seoul, Korea.