1. WHO report: Coronavirus disease (COVID-19) situation reports. https://www.who.int/docs/default-source/coronaviruse/situation-reports/20200315-sitrep-55-covid-19.pdf?sfvrsn=33daa5cb_6. [Accessed May 2020].
2. Royal College of Obstetricians and Gynaecologists guidance on Coronavirus (COVID-19) Infection in pregnancy. Version 9. https://www.rcog.org.uk/globalassets/documents/guidelines/2020-05-13-coronavirus-covid-19-infection-in-pregnancy.pdf. [Accessed May 2020].
3. Pubic Health England guidance on COVID-19 personal protective equipment (PPE). https://www.gov.uk/government/publications/wuhan-novel-coronavirus-infection-prevention-and-control/covid-19-personal-protective-equipment-ppe. [Accessed May 2020].
4. The UK Obstetric Surveillance System SARS-CoV-2 Infection in Pregnancy Collaborative Group (UKOSS). Characteristics and outcomes of pregnant women hospitalised with confirmed SARS-CoV-2 infection in the UK: a national cohort study using the UK Obstetric Surveillance System (UKOSS) Pre-print available from https://www.npeu.ox.ac.uk/downloads/files/ukoss/annual-reports/UKOSS%20COVID-19%20Paper%20pre-print%20draft%2011-05-20.pdf. [Accessed May 2020].
5. Nowell L, Norris J, White D. Thematic analysis: striving to meet the trustworthiness criteria. Int J Qual Methods. 2007;16(1):1–13.