1 Department Pediatrics, Gyeongsang National University of Hospital, Jinju, South Korea; Gyeongsang National University of Medicine, Institute of Health Science, Jinju, South Korea. Electronic address: polo96@daum.net.
2 Gyeongsang National University of Medicine, Institute of Health Science, Jinju, South Korea; Department of Neurology, Gyeongsang National University of Hospital, Jinju, South Korea.