Coyer, L, Boyd, A, Schinkel, J, Agyemang, C, Galenkamp, H, Koopman, A D M, Leenstra, T, Moll van Charante, E P, van den Born, B-J H, Lok, A, Verhoeff, A, Zwinderman, A H, Jurriaans, S, van Vught, L A, Stronks, K & Prins, M 2022, ' SARS-CoV-2 antibody prevalence and correlates of six ethnic groups living in Amsterdam, the Netherlands : A population-based cross-sectional study, June-October 2020 ', BMJ Open, vol. 12, no. 1, e052752 . https://doi.org/10.1136/bmjopen-2021-052752 BMJ open, 12(1):e052752. BMJ Publishing Group BMJ Open, 12(1):e052752. BMJ Publishing Group BMJ Open, Vol 12, Iss 1 (2022) BMJ Open