Ljung R., Sundström A., Grünewald M., Backman C., Feltelius N., Gedeborg R., & Zethelius B. (2021). The profile of the COvid-19 VACcination register SAFEty study in Sweden (CoVacSafe-SE). Upsala Journal of Medical Sciences, 126(1). https://doi.org/10.48101/ujms.v126.8136