1. College of Veterinary Medicine and Institute of Veterinary Science; Kangwon National University; 1 Kangwondaehak-gil Chuncheon Gangwon 24341 Republic of Korea
2. Biotoxtech Co.; 53 Yeongudanji-ro, Ochang-eup, Cheongwon-gu Cheongju-si Chungcheongbuk-do 28115 Republic of Korea