Wee S-H, Park C-K, Jeong J-M, Kim C-H, Hwang I-J, Kim S-J, Yoon H, Lee E-S, Nam H-M, Park J-Y, Moon O-K
Veterinary Epidemiology Division, National Veterinary Research and Quarantine Service, 480 Anyang City, Gyeonggi-do 430-824, Republic of Korea.
Vet Rec. 2005 Jul 23;157(4):113-5. doi: 10.1136/vr.157.4.113.