1. Department of Neurology; Chung-Ang University Hospital, Chung-Ang University College of Medicine; Republic of Korea
2. Department of Neurology; Inha University Hospital, Inha University College of Medicine; Incheon Republic of Korea
3. Department of Neurology; Kyung Hee University Hospital, Kyung Hee University College of Medicine; Seoul Republic of Korea
4. Department of Orthopaedic Surgery; Chung-Ang University Hospital, Chung-Ang University College of Medicine; Seoul Republic of Korea