Early identification of patients admitted to hospital for covid-19 at risk of clinical deterioration: model development and multisite external validation study.

Kamran F, Tang S, Otles E, McEvoy DS, Saleh SN, Gong J, Li BY, Dutta S, Liu X, Medford RJ, Valley TS, West LR, Singh K, Blumberg S, Donnelly JP, Shenoy ES, Ayanian JZ, Nallamothu BK, Sjoding MW, Wiens J