Outcomes of treatment of severe COVID-19 pneumonia with tocilizumab: a report of two cases from Tunisia. - Ben Azaiz, Mouna; Chatbri, Bassem; Sellami, Walid; Romdhani, Chihebeddine; Lamine, Khaled; Ghazouani, Ezzedine; Oueslati, Ridha; Gharsallah, Hedi; Ferjani, Mustapha (Pan African Medical Journal, 2021)