Ammann, P., A. Ulyte, S. R. Haile, M. A. Puhan, S. Kriemler, and T. Radtke. “Perceptions towards Mask Use in School Children During the SARS-CoV-2 Pandemic: Descriptive Results from the Longitudinal Ciao Corona Cohort Study”. Swiss Medical Weekly, vol. 152, no. 1516, Apr. 2022, p. w30165, doi:10.4414/SMW.2022.w30165.