Risk factors associated with day-30 mortality in patients over 60 years old admitted in ICU for severe COVID-19: the Senior-COVID-Rea Multicentre Survey protocol.

Falandry C, Malapert A, Roche M, Subtil F, Berthiller J, Boin C, Dubreuil J, Ravot C, Bitker L, Abraham P, Collange V, Balança B, Goutte S, Guichon C, Gadea E, Argaud L, Dayde D, Jallades L, Lepape A, Pialat JB, Friggeri A, Thiollière F; Senior-COVID-Rea study Group.