1. WHO statement on the meeting of the International Health Regulations Emergency Committee concerning the international spread of wild poliovirus. Geneva: World Health Organization; 2014. Available from: http://www.who.int/mediacentre/news/statements/2014/polio-20140505/en/ [cited 2014 May 26].
2. The Global Polio Eradication Initiative. Polio this week [Internet]. Geneva: World Health Organization; 2014. Available from: http://www.polioeradication.org/dataandmonitoring/poliothisweek.aspx [cited 2014 May 26].
3. Polio eradication and endgame strategic plan 2013–2018. Geneva: World Health Organization; 2010. Available from: http://www.polioeradication.org/Resourcelibrary/Strategyandwork/Strategicplan.aspx [cited 2014 May 26].
4. Eradication versus control for poliomyelitis: an economic analysis.;Thompson;Lancet,2007
5. The Global Polio Eradication Initiative. Middle East polio technical bulletin. Geneva: World Health Organization; 2014. http://www.polioeradication.org/Portals/0/Document/Aboutus/Governance/IMB/10IMBMeeting/10.1_10IMB.pdf [cited 2014 May 26].