1. Global Polio Eradication Initiative. Independent Monitoring Board: thirteenth report, August 2016. http://polioeradication.org/wp-content/uploads/2016/09/14IMB_Report_EN.pdf
2. Progress toward polio eradication—worldwide, 2015–2016.;Morales;MMWR Morb Mortal Wkly Rep,2016
3. Global Polio Eradication Initiative. Polio eradication and endgame strategic plan 2013–2018. Geneva, Switzerland: World Health Organization; 2014. http://www.who.int/immunization/diseases/poliomyelitis/endgame_objective2/about/en/
4. Tracking progress toward polio eradication - worldwide, 2013-2014.;Porter;MMWR Morb Mortal Wkly Rep,2015
5. Progress toward poliomyelitis eradication—Afghanistan and Pakistan, January 2013–August 2014.;Farag;MMWR Morb Mortal Wkly Rep,2014