Li N, Jiang H, Li J, Wang Z, Li C, Li X, Ding S
Department of Pharmacology and Toxicology, College of Veterinary Medicine, China Agriculture University, Beijing, China.
J Vet Pharmacol Ther. 2009 Aug;32(4):397-9. doi: 10.1111/j.1365-2885.2008.01044.x.