1. Respiratory and Systemic Infection Laboratory, Health Protection Agency, Specialist and Reference Microbiology Division, 61 Colindale Avenue, London NW9 5HT, UK
2. Mycoplasma Experience Ltd, 1 Norbury Road, Reigate, Surrey RH2 9BY, UK
3. Department of Veterinary Pathology, University of Liverpool, Leahurst, Neston, South Wirral CH64 7TE, UK
4. Staten Serum Institut, Mycoplasma Laboratory, Artillerivej 5, Copenhagen DK-2300, Denmark
5. Department of Microbiology, Royal Free Hospital, Pond Street, London NW3 2QG, UK
6. Department of Clinical Immunology, Royal Free Hospital, Pond Street, London NW3 2QG, UK