Department of Neurology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University, Seoul, Korea
aDepartment of Neurology, Yonsei University College of Medicine, Seoul, Korea
bDepartment of Neurology, Ewha Womans University Mokdong Hospital, Ewha Womans Univerrsity College of Medicine, Seoul, Korea
cDepartment of Neurology, Hanyang University College of Medicine, Seoul, Korea
dDepartment of Neurology, Korea University Anam Hospital, Seoul, Korea
eDepartment of Neurology, Ewha Womans University Seoul Hospital, Ewha Womans Univerrsity College of Medicine, Seoul, Korea
fDepartment of Neurology, Kangbuk Samsung Hospital, Seoul, Korea
gDepartment of Neurology, Kyung Hee University Hospital, Kyung Hee University College of Medicine, Seoul, Korea
hDepartment of Neurology, Jungang Hospital, Jeju, Korea
iDepartment of Neurology, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea
jDepartment of Neurology, Konkuk University Medical Center, Seoul, Korea
kDepartment of Neurology, Soonchunhyang University Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan, Korea