Butler, Janet A. (b&w Equine Group, Colles, Christopher M. (avonvale Veterinary Practice Ltd., Dyson, Sue J. (centre For Equine Studies, Kold, Svend E. (svend Kold Ltd. (1) Kipen, David (1) Herbert, Frank (1) Cook, Christofer (1) Butler, Christopher (christ Church College (1)