Cross-Sectional Investigation of the Awareness and Practices of Food Safety among Food Service Catering Staff in Riyadh City Hospitals during the Coronavirus Pandemic oleh Shaima Baker Alsultan, Shiekhah S. Allowaymi, Ghedeir M. Alshammari, Ali Alrasheed, Amro B. Hassan, Abdulmohsen Abdulaziz Alzobaa, Ahlam Bader Alqahtani, Mohammed Abdo Yahya