Geta, Edosa Tesfaye, Yibeltal Siraneh Belete, and Elias Ali Yesuf. “Cost of Treatment Among Self-Referred Outpatients in Referral Hospitals Compared to Primary Health Care Facilities in East Wollega, Western Ethiopia: A Comparative Cross-Sectional Study”. Journal of Public Health in Africa 10, no. 1 (June 4, 2019). Accessed August 4, 2020. https://publichealthinafrica.org/index.php/jphia/article/view/1024.