Prevalence and outcome of sepsis and septic shock in intensive care units in Addis Ababa, Ethiopia: A prospective observational study oleh Hailu Abera Mulatu, Tola Bayisa, Yoseph Worku, John J. Lazarus, Esubalew Woldeyes, Dawit Bacha, Bisrat Taye, Mamo Nigussie, Hamelmal Gebeyehu, Azeb Kebede