Long-term outcomes of mesenchymal stem cell therapy in severe COVID-19 patients: 3-year follow-up of a randomized, double-blind, placebo-controlled trial
Meng-Qi Yuan, Le Song, Ze-Rui Wang, Zi-Ying Zhang, Ming Shi, Junli He, Qiong Mo, Ning Zheng, Wei-Qi Yao, Yu Zhang, Tengyun Dong, Yuanyuan Li...