1. Clinical Epidemiology and Medical Statistics Unit, Department of Medical, Surgical and Experimental Sciences, University of Sassari, Sassari, Italy
2. European Centre for Disease Prevention and Control, Stockholm, Sweden
3. Servizio di Epidemiologia Clinica delle Malattie Respiratorie, Istituti Clinici Scientifici Maugeri, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Tradate, Italy
4. Public Health Consulting Group, Lugano, Switzerland
5. Verduin Public Health Consult, Oegstgeest, the Netherlands
6. Regional Health Administration of the North, Department of Public Health, Porto, Portugal
7. Centre of TB and Lung Diseases, Riga East University Hospital, Riga, Latvia
8. National Reference Centre for MDR-TB, Hospital Centre Vila Nova de Gaia, Department of Pneumology; Public Health Science and Medical Education Department, Faculty of Medicine, University of Porto, Porto, Portugal
9. The Global Fund to fight AIDS, Tuberculosis and Malaria (GFATM) Programme, Department of Management of Specialized Donor-Funded Programmes, Ministry of Health, Sofia, Bulgaria
10. Respiratory Infectious Diseases Unit, L Spallanzani National Institute for Infectious Diseases, IRCCS, Rome, Italy
11. Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University, London, UK
12. St Sofia University Hospital for Active Treatment of Respiratory Diseases, Sofia, Bulgaria
13. Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University, London, UK, Division of Infection, Royal London Hospital, Barts Health NHS Trust, London, UK