Arigawu, A. S. ., and F. Enqusilase. “Factors Influencing the Completion of Head and Neck Cancer Treatment: A Case Study of Tikur Anbessa Referral Hospital, Addis Ababa, Ethiopia”. Journal of Science and Sustainable Development, vol. 3, no. 2, July 2015, pp. 57-72, doi:10.20372/au.jssd.3.2.2015.048.