1. Peripheral Neuropathy Research Center Dong‐A University College of Medicine Busan South Korea
2. Department of Neurology Dong‐A University Medical Center Busan South Korea
3. Department of Neurology, Ulsan University Hospital University of Ulsan College of Medicine Ulsan South Korea
4. Department of Neurology Gyeongsang National University Hospital Jinju South Korea
5. Department of Neurology, School of Medicine Catholic University of Daegu Daegu South Korea
6. Soonchunhyang University Cheonan Hospital Soonchunhyang University College of Medicine Cheonan South Korea
7. Department of Neurology Inje University Busan Paik Hospital Busan South Korea
8. Department of Neurology Kyung Hee University Hospital Seoul South Korea