1. VIM3: International Vocabulary of Metrology, https://www.bipm.org/en/publications/guides/vim.html. Accessed July 2020
2. BBC News, Hancock calls for urgent review into coronavirus death data in England. https://www.bbc.co.uk/news/health-53443724. Accessed July 2020
3. Brown RJC, Andres H (2020) Accred Qual Assur 25:161–166
4. Office for National Statistics, Coronavirus (COVID-19), https://www.ons.gov.uk/peoplepopulationandcommunity/healthandsocialcare/conditionsanddiseases. Accessed July 2020
5. Diagnostic tests for covid-19—improving accuracy and global harmonisation. https://blogs.bmj.com/bmj/2020/05/06/diagnostic-tests-for-covid-19-improving-accuracy-and-global-harmonisation/. Accessed July 2020