Analysis of uptake, effectiveness and safety of COVID-19 vaccinations in pregnancy using the QResearch® database: research protocol and statistical analysis plan
Copland E., Hirst J., Ranger T., Mei W., Dixon S., Coupland C., Hodson K., Richardson JL., Harnden A., Sheikh A., Dezateux C., Kelly B., Knight M., van Tam J., Morelli A., Enstone J., Hippisley-Cox J.