Timm Konold
, Gemma Bone
, Alberto Vidal-Diez
, Raul Tortosa
, Andrew Davis
, Glenda Dexter
, Peter Hill
, Martin Jeffrey
, Marion M Simmons
, Melanie J Chaplin
, Susan J Bellworthy
and Christine Berthelin-Baker 
BMC Veterinary Research 2008,
4:16doi:10.1186/1746-6148-4-16