Funding for this research was provided by:
Korean Society of Geriatric Neurology
Article History
Received: 16 January 2018
Accepted: 17 July 2018
First Online: 6 August 2018
Compliance with ethical standards
: All the patients provided written informed consent to the use of the data obtained in this study, and this study was approved through the Institutional Review Board of Konkuk University Medical Center