Babatimehin, Oyekanmi. “Validating the Place of Onchocerciasis in Migration: The Case of Endemic Communities in Kwara State, Nigeria”. Ife Research Publications in Geography, vol. 9, no. 1, June 2010, pp. 49-69, http://irpg.oauife.edu.ng/index.php/irpg/article/view/4.