Cita APA

Hoffmann, C., & Wolf, E. (2020). Older age groups and country-specific case fatality rates of COVID-19 in Europe, USA and Canada. Infection.

Chicago Style Citation

Hoffmann, Christian, i Eva Wolf. "Older Age Groups and Country-specific Case Fatality Rates of COVID-19 in Europe, USA and Canada." Infection 2020.

Cita MLA

Hoffmann, Christian, i Eva Wolf. "Older Age Groups and Country-specific Case Fatality Rates of COVID-19 in Europe, USA and Canada." Infection 2020.