1. St George’s Hospital Medical School, London, United Kingdom
2. Health Protection Agency, London Region Epidemiology Unit, London, United Kingdom
3. Health Protection Agency Mycobacterium Reference Unit, Barts and the London School of Medicine and Dentistry, London, United Kingdom
4. North Central London TB Network, Haringey Teaching Primary Care Trust and National Health Service London, London, United Kingdom
5. Her Majesty’s Prison Pentonville, London, United Kingdom
6. Health Protection Agency, North East and Central Health Protection Unit, London, United Kingdom
7. Health Protection Agency, Centre for Infections, London, United Kingdom
8. North Middlesex University Hospital, London, United Kingdom
9. Royal Free University Hospital, London, United Kingdom
10. Homerton University Hospital, London, United Kingdom