1. Department of Infectious Diseases, Galliera Hospital, Genoa, Italy;
2. Department of Pulmonary Diseases and Tuberculosis, and, TB Center Beatrixoord, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands;
3. Global Public Health Unit, Wolfson Institute of Population Health, Queen Mary University, London, UK;
4. Istituti Clinici Scientifici Maugeri, Istituto di Ricovero e Cura a Carattere Scientifico, Tradate, Italy