1 Department of Neurology, Institute for Cognitive Intervention, International St. Mary's Hospital, Catholic Kwandong University College of Medicine, 25, Simgok-ro 100beon-gil, Seo-gu, Incheon, 22711, Republic of Korea. bondku34@gmail.com.
2 Department of Medicine, Songpa-gu Health Center, Seoul, 05552, Republic of Korea.