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Um, Ji-Hyun; Kim, Sunghan; Kim, Yun-Kyoung; Song, Seok-Bo; Lee, Suk-Ha; Verma, Desh Pal S.; Cheon, Choong-Ill
Du, Hui; Kim, Sunghan; Hur, Yoon-Sun; Lee, Myung-Sok; Lee, Suk-Ha; Cheon, Choong-Ill