Ammann, P., Ulyte, A., Haile, S.R., Puhan, M.A., Kriemler, S. and Radtke, T. 2022. 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. 152, 1516 (Apr. 2022), w30165. DOI:https://doi.org/10.4414/SMW.2022.w30165.