Seroprevalence of SARS-CoV-2 antibodies in children of United Kingdom healthcare workers: a prospective multicentre cohort study protocol oleh Mark David Lyttle, Derek Fairley, James McKenna, Claire Mcginn, Chris Watson, Hannah Mitchell, Jennifer Evans, Michael Corr, Rebecca Moore, Gala Rowe-Setz, Steven Foster, Lisa McFetridge, Julieann Maney, Michael David Shields, Tom Waterfield