Chaffin M K, Ruoff W W, Schmitz D G, Carter G K, Morris E L, Steyn P
Department of Large Animal Medicine and Surgery, Texas Veterinary Medical Center, College of Veterinary Medicine, Texas A&M University, College Station 77843-4475.
Equine Vet J. 1990 Jan;22(1):62-5. doi: 10.1111/j.2042-3306.1990.tb04211.x.