This author has not been identified. Look up 'Sein Oh' in GoogleThis author has not been identified. Look up 'Younggyun Oh' in GoogleThis author has not been identified. Look up 'Juyong Lee' in GoogleThis author has not been identified. Look up 'Kihyun Kim' in GoogleThis author has not been identified. Look up 'Seungjun Lee' in GoogleThis author has not been identified. Look up 'Jintae Kim' in GoogleThis author has not been identified. Look up 'Hyungil Chae' in Google