1 Department of Community Medicine, Employees State Insurance Corporation (ESIC) Medical College and Post Graduate Institute of Medical Sciences and Research (PGIMSR), Bangalore, India.
2 Department of Community Medicine, Mahatma Gandhi Institute of Medical Sciences, Sevagram, Wardha, India.
3 Department of Community Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
4 The International Union Against Tuberculosis and Lung Disease, South East Asia Office, New Delhi, India.