1. WHO declares COVID-19 a pandemic;Cucinotta;Acta Bio Medica: Atenei Parmensis,2020
2. Centers for Disease Control and Prevention. COVID-19 Case Surveillance Public Use Data. https://data.cdc.gov/Case-Surveillance/COVID-19-Case-Surveillance-Public-Use-Data/vbim-akqf.
3. Risk factors for mortality among COVID-19 patients;Albitar;Diabetes Res Clin Pract,2020
4. Factors associated with COVID-19-related death using OpenSAFELY;Williamson;Nature,2020
5. Is diabetes mellitus associated with mortality and severity of COVID-19? A meta-analysis;Kumar;Diabetes Metab Syndr,2020