This author has not been identified. Look up 'O.-Joun Lee' in GoogleThis author has not been identified. Look up 'Long Nguyen Hoang' in GoogleThis author has not been identified. Look up 'Jai E. Jung' in GoogleThis author has not been identified. Look up 'Tai-Won Um' in GoogleThis author has not been identified. Look up 'Hyun-Woo Lee' in Google