Article History
Received: 13 November 2020
Accepted: 5 January 2021
First Online: 12 January 2021
Ethics approval and consent to participate
: This study was following the research ethics commands of the ethics committee of Al-Azhar University Hospital but there is no applicable ethical approval number, and verbal consent was obtained from all participants due to difficulty to obtain written one in those critically ill patients.
: NotĀ Applicable.
: There are no conflicts of interest.