1. World Health Organization Regional Office for Europe – Tuberculosis, HIV and Viral Hepatitis Programme, Copenhagen, Denmark
2. Department of Medical, Surgical and Experimental Sciences, University of Sassari, Sassari, Italy
3. Independent Consultant, Atlanta, GA, USA
4. International Union Against Tuberculosis and Lung Disease, Paris, France
5. Respiratory Medicine, Tan Tock Seng Hospital, Singapore
6. Maugeri Care and Research Institute, WHO Collaborating Center, Tradate, Italy, , Email: daram@who.int