Mesenchymal stromal cell therapy for COVID-19 acute respiratory distress syndrome: a double-blind randomised controlled trial - Martinez-Munoz, Maria E; Payares-Herrera, Concepcion; Lipperheide, Ines; de Molina, Rosa Malo; Salcedo, Isabel; Alonso, Rosalia; Martin-Donaire, Trinidad; Sanchez, Rocio; Zafra, Rocio; Garcia-Berciano, Miguel; Trisan-Alonso, Andrea; Perez-Torres, Manuel; et al. (BONE MARROW TRANSPLANTATION, 2024)