1. World Development Indicators & Global Development Finance database [Internet],1960
2. India Pharma 2020: propelling access and acceptance, realising true potential [white paper];Bhadoria,2010
3. Press Information Bureau, Government of India. Indian vaccine market reaches $900 million [press release]. New Delhi: Press Information Bureau; 2011 November. Available from: http://www.pib.nic.in/newsite/erelease.aspx?relid=77172 [cited 22.08.12].
4. India's role in global R&D;Wilson,2012
5. District Level Household and Facility Survey (DLHS-3), 2007–08 [Internet];International Institute for Populations Sciences (IIPS),2010