1. Department of Clinical Sciences, Box 7054, Swedish University of Agricultural Sciences, SLU, SE-750 07 Uppsala, Sweden
Agneta.egenvall@kv.slu.se
2. Department of Clinical Sciences, Box 7054, Swedish University of Agricultural Sciences, SLU, SE-750 07 Uppsala, Sweden
3. Agria Insurance, P.O. Box 70306, SE-107 23 Stockholm, Sweden
4. Department of Companion Animals, Norwegian Veterinary School, P.O. Box 8146 Dep., 0033 Oslo, Norway