Biniam Kefiyalew, Workineh Mamo, Moges A. Chanyalew, Solomon Abay, Biruk Abate, Ambanesh Necho, Yejimawork Ayalew, Zeleke Abebaw Mekonnen, Alemayehu Teklu, Amsalu Shiferaw, and Binyam Tilahun. “ Northwest Ethiopia”. The Ethiopian Journal of Health Development 35, no. 3 (November 22, 2021). Accessed November 30, 2021. https://ejhd.org/index.php/ejhd/article/view/4648.