Acknowledgments
We thank all health care workers of Masih Daneshvari hospital working at the front line against COVID-19. We also appreciate information technology and health records staff of the hospital for providing electronic health records.
Conflict of interest: There is no conflicting interest to be declared by the authors.
Funding: This study was funded by National Research Institute of Tuberculosis and Lung Diseases.Data availability: The data that support the findings of this study are available from the corresponding author upon reasonable request.