Retrospective observational study
291
Epidemiological and clinical features of 291 cases with coronavirus disease 2019 in areas adjacent to Hubei, China: a double-center observational study [medrxiv]
0
COVID-19 (severe/critical)
Comorbidities
Heart disease
Not present
Present
Odds ratio
3.710 (1.130-12.200)
No
Yes