Pusan National University Indusrtyuniversity; Chung, Hae Young; Park, Min Hi; Ha, Young Mi; Han, Yu Kyeong; Park, Ji Young; Park, Yun Jung; Kim, Jin Ah; Lee, Ji Yeon; Song, Yu Min; Moon, Hyung Ryong Patent: US2014/37564 A1, 2014 ; Location in patent: Paragraph 0293-0295 ;