Haber, N. A., Clarke-Deelder, E., Feller, A., Smith, E. R., Salomon, J. A., MacCormack-Gelles, B., Stone, E. M., Bolster-Foucault, C., Daw, J. R., Hatfield, L. A., Fry, C. E., Boyer, C. B., Ben-Michael, E., Joyce, C. M., Linas, B. S., Schmid, I., Au, E. H., Wieten, S. E., Jarrett, B., … Stuart, E. A. (2022). Problems with evidence assessment in COVID-19 health policy impact evaluation: a systematic review of study design and evidence strength. BMJ Open, 12(1), e053820. https://doi.org/10.1136/bmjopen-2021-053820