%0 Journal Article %J BMJ Open %D 2022 %T Prevalence and incidence of antibodies against SARS-CoV-2 among primary healthcare providers in Belgium during 1 year of the COVID-19 epidemic: prospective cohort study protocol %A Niels Adriaenssens %A Beatrice Scholtes %A Bruyndonckx, Robin %A Jan Y Verbakel %A An De Sutter %A Stefan Heytens %A Ann Van Den Bruel %A I Desombere %A Van Damme, Pierre %A Goossens, Herman %A Laƫtitia Buret %A Els Duysburgh %A Coenen, Samuel %B BMJ Open %V 12 %8 Jul-01-2024 %G eng %N 1 %R 10.1136/bmjopen-2021-054688