Study design
A prospective non-interventional study was carried out at the Hematology Oncology Department, Children’s hospital, Ain-Shams University, Cairo, Egypt. The study sample was obtained using a non-probability convenience sample including all hospitalized children with cancer with confirmed SARS-COV-2 between mid-April and mid-June 2020. The study was approved by the Research Ethics Committee, Faculty of Medicine, Ain Shams University [FMASU P25a /2020] in accordance with the Code of Ethics of the World Medical Association (Declaration of Helsinki) for experiments in humans, 2013 and was registered on clinicaltrials.gov [NCT04404244].