The impact of frailty on intra-hospital survival in older patients with COVID-19 infection: The importance of early identification. SEMI-COVID National Registry

1. López Sampalo, A.
2. Hernández Negrín, H.
3. Bernal López, M.R.
4. Rubio Rivas, M.
5. Martín Escalante, M.D.
6. Wikman Jogersen, P.
7. García Reyne, A.
8. Fernández Madera Martínez, R.
9. Gómez Antúnez, M.
10. Beato Pérez, J.L.