1. Food Standards Division, Korea Food and Drug Administration, 187 Osongsaengmyeong2-ro, Gangoe-Myeon, Cheongwon-gun, Chungcheongbuk-do 363-951, Republic of Korea
2. Division of Life and Environmental Science, Daegu University, Gyeongsan, Gyeongsangbuk-do 712-714, Republic of Korea