Ali, A., T. Gebre-Michael, G. Mengistu, and F. Balcha. “A Survey on Leishmaniasis and the Leishmanin Skin Test Profile in Lower Awash Valley, Northeast Ethiopia”. Ethiopian Journal of Health Development, vol. 18, no. 3, June 2005, pp. 159-63, doi:10.4314/ejhd.v18i3.9953.