1. Population reference Bureau : World population data sheet 2013 http://www.prb.org/Publications/Datasheets/2013/2013-world-population-data-sheet.aspx. [Last accessed on 2014 Nov 01].
2. Spiegel DA. Bibliography of orthopaedic problems in developing countries. In: Spiegel DA. Seattle, WA, USA: Published by Global-HELP Organisation; 2004. p. 5.
3. Wikipedia. Below pover line (India). http://en.wikipedia.org/wiki/Below_Poverty_Line_(India) [Last accessed on 2014 Nov 03].
4. Wikipedia. Demographics of India. http://en.wikipedia.org/wiki/Demographics_of_India. [Last accessed on 2014 Nov 03].
5. Gururaj G. Injuries in India: A National Perspective. In: Burden of disease in India. National Commission on Macroeconomics and Health. Ministry of Health and Family Welfare. Government of India 2005. p. 325-347.