1. Velammal Medical College Hospital and Research Institute; Department of Community Medicine; Madurai Tamil Nadu India 625009
2. Postgraduate Institute of Medial Education and Research (PGIMER); School of Public Health; Chandigarh India
3. International Union Against Tuberculosis and Lung Disease (The Union), South-East Asia Regional Office; Department of Operational Research; C-6 Qutub Instituional Area New Delhi New Delhi India 110016
4. Panjab University; University Business School; Sector 14 Chandigarh India 160012