1. Risk factors associated with mortality among patients with COVID-19 in intensive care units in Lombardy, Italy.;Gasselli;JAMA Intern Med
2. Factors associated with health in critically ill patients with coronavirus disease 2019 in the United States.;Guptas;JAMA Intern Med
3. Clinical outcomes in young US adults hospitalized with COVID-19.;Cunningham;JAMA Intern Med