Geldof, J., Truyens, M., Sabino, J., Ferrante, M., Lambert, J., Lapeere, H., Hillary, T., Van Laethem, A., de Vlam, K., Verschueren, P., Padalko, E., Lobaton, T., Vermeire, S., & , (n.d.). p593 Impact of immunomodulating treatment modalities, active smoking and (repeated) COVID19 vaccination on S-antibody seroconversion in IMID patients. Results of the BELCOMID study: BELgian Cohort study of COVID-19 in Immune Mediated Inflammatory Diseases (IMID). Journal of Crohn's and colitis, 17, i720–i722. http://access.bl.uk/ark:/81055/vdc_100179844278.0x000028