The authors
Neil Sargison, BA, VetMB, PhD, DSHP, DipECSRHM, FRCVS, is a Professor of Farm Animal Practice at the University of Edinburgh, Royal (Dick) School of Veterinary Studies, Roslin, Midlothian, Scotland; President of the European College of Small Ruminant Health Management.

James Patrick Crilly, MA, VetMB, CertAVP, DipECSRHM, MRCVS, is a Veterinary Surgeon at Larkmead Veterinary Group, UK.

Andrew Hopker, BVM&S, CertAVP, MRCVS, is a Lecturer and Clinician in the Farm Animal Practice at the Royal (Dick) School of Veterinary Studies, Scotland.