Affiliation: | aDepartment of Neurology, Korea Cancer Center Hospital, Seoul, Korea.;bPublic Health Medical Service, Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea.;cDepartment of Medical Administration, Daejeon Health Sciences College, Daejeon, Korea.;dDepartment of Neurology, Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea. |