Predictors of developing severe COVID-19 among hospitalized patients: a retrospective study - Alkhalifa, Hussain Abduljaleel; Darwish, Ehab; Alsalman, Zaenb; Alfaraj, Aman; Alkhars, Abdullah; Alkhalifa, Fatimah; Algaraash, Mohammed; Elshebiny, Ahmed Mohammed; Alkhoufi, Emad; Elzorkany, Khaled Mohamed Amin (Frontiers in Medicine, 2025)