1. NHS England & NHS Improvement. Letter: Caring for people at highest risk during COVID-19 incident (22 March 2020). https://www.england.nhs.uk/coronavirus/wp-content/uploads/sites/52/2020/03/200321_GP-letter_Annex-2_FINAL_2.pdf
2. NHS England & NHS Improvement. Letter to GPs (22 March 2020). https://www.england.nhs.uk/coronavirus/wp-content/uploads/sites/52/2020/03/200321_COVID-19_CMO_MD_letter-to-GPs_FINAL_2.pdf
3. BMA. COVID-19: steps for GP practices to take (23 March 2020) https://beta.bma.org.uk/advice-and-support/covid-19/practical-guidance/covid-19-steps-for-gp-practices-to-take
4. General Medical Council. Our Guidance for Doctors (March 2020). https://www.gmc-uk.org/news/news-archive/coronavirus-information-and-advice/our-guidance-for-doctors