?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Maynou%2C+Laia&rft.aufirst=Laia&rft.aulast=Maynou&rft.atitle=The+association+between+frailty+risk+and+COVID-19-associated+all-mortality+in+hospitalised+older+people%3A+a+national+cohort+study&rft.title=European+Geriatric+Medicine&rft.issn=1878-7649&rft.date=24+June+2022&rft.genre=article