1. TB Research Group, Department of Statutory and Exotic Bacterial Diseases, Veterinary Laboratories Agency Weybridge, New Haw, Surrey KT15 3NB, United Kingdom
2. Veterinary Laboratories Agency Starcross, Staplake Mount, Exeter, Devon EX6 8PE, United Kingdom
3. Veterinary Laboratories Agency Langford, Bristol BS40 5DX, United Kingdom
4. Central Science Laboratory, Sand Hutton, York YO4 1LZ, United Kingdom
5. Chembio Diagnostic Systems, Inc., Medford, New York 11763