1.
Seroprevalence of SARS-CoV-2 antibodies and associated risk factors in children less than 6 years of age in the canton of Fribourg, Switzerland (COVPED study): a population-based cross-sectional study. Swiss Med Wkly [Internet]. 2022 May 24 [cited 2025 Oct. 29];152(2122):w30173. Available from: https://www.smw.ch/index.php/smw/article/view/3199