Prognostic factors and outcomes of COVID-19 cases in Ethiopia: multi-center cohort study protocol oleh Saro Abdella, Masresha Tessema, Geremew Tasew, Atkure Defar, Asefa Deressa, Feyisa Regasa, Frehiwot Teka, Eyasu Tigabu, Dereje Nigussie, Tefera Belachew, Million Molla, Amare Deribew, Workeabeba Abebe, Tegbar Yigzaw, Tsinuel Nigatu, Getnet Mitike, Tewodros Haile, Haftom Taame, Muhammed Ahmed, Frehiwot Nigatu, Tola Tolesa, Eskinder Wolka, Wondwossen Amogne, Arnaud Laillou, Misker Amare, Yaregal Fufa, Alemayehu Argaw, Woldesenbet Waganew, Akilili Azazh, Aschalew Worku, Berhane Redae, Menbeu Sultan, Miraf Walelegn, Muluwork Tefera, Sisay Yifru, Rahel Argaw, Natinael Brehau, Sisay Teklu, Getachew Demoz, Yakob Seman, Mihretab Salasibew, Eshetu Ejeta, Susan J. Whiting, Dawit Wolday, Getachew Tollera, Ebba Abate, Dereje Duguma