Systematic review and meta-analysis of cell therapy for COVID-19: global clinical trial landscape, published safety/efficacy outcomes, cell product manufacturing and clinical delivery - Couto, Pedro Silva; Al-Arawe, Nada; Filgueiras, Igor Salerno; Fonseca, Dennyson Leandro Mathias da; Hinterseher, Irene; Catar, Rusan Ali; Chinnadurai, Raghavan; Bersenev, Alexey; Marques, Otavio Cabral; Moll, Guido; Verter, Frances (Frontiers in immunology, 2023)