@techreport{Centers for Disease Control and Prevention2020,
author = {Centers for Disease Control and Prevention},
title= {Coronavirus disease 2019 (COVID-19): Groups at higher risk for severe illness},
year = {2020},
URL = {https://www.cdc.gov/coronavirus/2019-ncov/need-extra-precautions/groups-at-higher-risk.html#people-aged-65%20years-and-older},
}