Association of the Delta SARS-CoV-2 variant with 28-day hospital mortality between December 2020 and September 2021

1. Ciuffreda, L.
2. Alcoba-Florez, J.
3. Lorenzo-Salazar, J.M.
4. Gil-Campesino, H.
5. García-Martínez de Artola, D.
6. Díez-Gil, O.
7. Rodríguez-Pérez, H.
8. Íñigo-Campos, A.
9. Valenzuela-Fernández, A.
10. González-Montelongo, R.
11. Flores, C.