Authors : Jihyeong Ma1,5, Jae-Ik Kim2,5, Baekgyeom Kim3, Jongseok Nam1, Hyungseok Seo3, Nak Hyeong Lee1, Oh Taewook3, Min Seok Kim5, Jesung Koh3, Tae-Heon Yang4, and Ki-Uk Kyung1