1. Severe outcomes among patients with coronavirus disease 2019 (COVID-19)—United States, February 12-March 16, 2020.;Centers for Disease Control and Prevention;MMWR,2020
2. Modern Healthcare. Two emergency physicians in critical condition after becoming infected with COVID-19. Published March 15, 2020. Accessed March 20, 2020. https://www.modernhealthcare.com/providers/two-emergency-physicians-critical-condition-after-becoming-infected-covid-19
3. WIFR TV. Pritzker asks retired physicians, doctors and nurses to come back to work during the COVID-19 outbreak. Posted March 21, 2020. Accessed March 23, 2020. https://www.wifr.com/content/news/Pritzker-asks-retired-physicians-doctors-and-nurses-to-come-back-to-work-during-the-COVID-1o-oubreak-568997121.html
4. NormanG. Fox News website. Britain asking 65?000 retired nurses and doctors to return to work to help fight coronavirus. Posted March 20, 2020. Accessed March 23, 2020. https://www.foxnews.com/world/britain-coronavirus-retired-nurses-doctors