Farnborough, UK: Healthcare Safety Investigation Branch; June 2022.
Kritz F. Shots. National Public Radio; May 24, 2021.
Kirkup B. London, England: Crown Copyright; 2020. ISBN 9781528622714.
Dahlberg B. Kaiser Health News. September 29, 2020.
Office of the Inspector General. Washington, DC: Department of Veterans Affairs; July 28, 2020. Report Number 19-07507-214.
Alesse L, Dukakis A, Tatum S, Mosk M. ABC News. March 20, 2020.
Linnane R, Diedrich J. Milwaukee Journal Sentinel. February 25, 2020.