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APA Citation
Upton, C. M., van Wijk, R. C., Mockeliunas, L., Simonsson, U. S., McHarry, K., van den Hoogen, G., Muller, C., von Delft, A., van der Westhuizen, H., van Crevel, R., Walzl, G., Baptista, P. M., Peter, J., Diacon, A. H., & , (2022). safety and efficacy of BCG re-vaccination in relation to COVID-19 morbidity in healthcare workers: A double-blind, randomised, controlled, phase 3 trial. EClinicalMedicine, 48, . http://access.bl.uk/ark:/81055/vdc_100158012804.0x000003