• Turning point in COVID-19 severity and fatality during the pandemic: a national cohort study in Qatar 

      Chemaitelly, Hiam; Ayoub, Houssein H; Faust, Jeremy Samuel; Coyle, Peter; Tang, Patrick; ... more authors ( BMJ Publishing Group , 2023 , Article)
      Objective To assess the evolution of COVID-19 severity and fatality in a unique setting that consistently applied, throughout the pandemic, rigorous and standardised criteria for defining severe COVID-19 outcomes. Methods ...