Prevalence of SARS-CoV-2 antibodies and associated factors in the adult population of Belgium: a general population cohort study between March 2021 and April 2022, Van der Heyden, Johan, Leclercq V, Duysburgh Els, Cornelissen Laura, Desombere Isabelle, Roukaerts Inge, and Gisle Lydia , Archives of Public Health, Jan-12-2024, Volume 82, Issue 1, (2024)