Tuberculosis Research Centre;
Indian Council of Medical Research. Chennai;
National Institute of Epidemiology;
Indian Council of Medical Research;
Chennai;
District Tuberculosis Officer;
Tiruvallur;
State TB Officer;
Tamil Nadu State;
Stop TB Unit;
Regional Office for South-East Asia (SEARO);
World Health Organization;
New Delhi;
Central TB Division;
Ministry of Health and Family Welfare;
New Delhi;
India;