1 Lebanon National Tuberculosis Programme, Ministry of Public Health, Beirut, Lebanon.
2 Fondation Mérieux, Beirut, Lebanon.
3 International Organisation for Migration, Beirut, Lebanon.
4 World Health Organization, Regional Office for the Eastern Mediterranean Region, Cairo, Egypt.
5 Servizio di Epidemiologia Clinica delle Malattie Respiratorie, Istituti Clinici Scientifici Maugeri, Istituto di Ricovero e Cura a Carattere Scientifico, Tradate, Italy.