Fig. 1From: Treatment of COVID-19-associated ARDS with umbilical cord-derived mesenchymal stromal cells in the STROMA-CoV-2 multicenter randomized double-blind trial: long-term safety, respiratory function, and quality of lifeFlow chart of the trial. ELS extracorporeal life support. UC-MSCs umbilical cord-derived mesenchymal stromal cellsBack to article page