Systematic review and meta-analysis of mesenchymal stromal/stem cells as strategical means for the treatment of COVID-19

This systematic review was registered under PROSPERO, international prospective register of systematic reviews with registration ID of CRD42022307730 (https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42022307730). The protocol was planned prior to registration according to PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) 2020 checklist. ¹⁴