1Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Goyang, Korea.
2Department of Neurology, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Goyang, Korea.
3Department of Radiology, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Goyang, Korea.
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