Dabsu, Regea, Yimtubezinash Woldeamanuel, and Daniel Asrat. “Otoscope and Stethoscope: Vehicles for Microbial Colonization at Tikur Anbessa Specialized Referral Hospital, Addis Ababa, Ethiopia”. The Ethiopian Journal of Health Development 28, no. 1 (February 9, 2016). Accessed April 19, 2024. https://ejhd.org/index.php/ejhd/article/view/122.