1. London Declaration on Neglected Tropical Diseases. Uniting to combat neglected tropical diseases: Ending the neglect and reaching 2020 goals. 2012. [http://unitingtocombatntds.org/sites/default/files/resource_file/london_declaration_on_ntds.pdf]. Accessed 30 November 2015.
2. World Health Organization. Accelerating work to overcome the global impact of neglected tropical diseases–A roadmap for implementation. 2012. [http://www.who.int/neglected_diseases/NTD_RoadMap_2012_Fullversion.pdf]. Accessed 30 November 2015.
3. Control, elimination, and eradication of river blindness: scenarios, timelines, and ivermectin treatment needs in Africa;YE Kim;PLoS Negl Trop Dis,2015
4. Topley and Wilson’s Microbiology and Microbial Infections. Volume Parasitology;JE Bradley,2005
5. A clinical classification and grading system of the cutaneous changes in onchocerciasis;ME Murdoch;Br J Dermatol,1993