1. NMBU Section for Small Ruminants, Department of Production Animal Clinical Science, 4325 Sandnes, Norway
2. Wern Veterinary Surgeons, Department of Research and Innovation, Unit 11, Lon Parcwr Industrial Estate, Ruthin, Denbighshire, LL15 1NJ, United Kingdom
3. Larkmead Veterinary Group, Ilges Lane, Cholsey, Oxford-shire, OX10 9PA, United Kingdom
4. NMBU Farm Animal Practice, Department of Production Animal Clinical Sciences, 0102 Oslo, Norway