| Affiliation: | 1. Faculty of Agriculture and Life Sciences, Lincoln University, PO Box 85084, Christchurch, Canterbury 7647, New Zealand;2. Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, P/Bag X04, Onderstepoort 0110, South Africa;3. Department of Agricultural Research Services, Lunyangwa Agricultural Research Station, PO Box 59, Choma Road, Mzuzu, Malawi;4. Disease Control, Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik, Midlothian EH26 0PZ, Scotland |
