kassa, Nebiyat, Alemayehu Woldeyes, and Chalachew Misganaw. “Prevalence and Factors Associated With Refractive Error Among Primary School Children in Addis Ababa, Ethiopia”. International Journal of Medical and Health Sciences Research 1, no. 9 (September 15, 2014): 92–104. Accessed May 17, 2024. https://archive.conscientiabeam.com/index.php/9/article/view/2225.