Changes

===References===

===References===

Mezerova, J., Kabes, R., Zert, Z., Jahn, P., Hanak, J. (2001) '''Impaction of right dorsal colon in the horse: report of 32 cases''' ''Vet. Med. - Czech, 46(11-12): 293-300''

Hammock, P. D., Freeman, D. E., Baker, G. J. (1998) '''Failure of Psyllium Mucilloid to Facilitate the Evacuation of Sand from the Equine Large Intestine''' ''AAEP Proceedings 9 Vol. 44 pp 246-247''