Patel MR, Carroll D, Ussery E, Whitham H, et al. Performance of oropharyngeal swab testing compared to nasopharyngeal swab testing
for diagnosis of COVID-19 -United States, January-February 2020. Clin Infect Dis 2020 Jun 16. pii: 5858273. doi: 10.1093.
PMID: 32548635