Zürcher, K., C. Mugglin, M. Egger, S. Müller, M. Fluri, L. Bolick, R. J. Piso, M. Hoffmann, and L. Fenner. “Vaccination Willingness for COVID-19 Among Healthcare Workers: A Cross-Sectional Survey in a Swiss Canton”. Swiss Medical Weekly, vol. 151, no. 3738, Sept. 2021, p. w30061, doi:10.4414/SMW.2021.w30061.