@book{4018,
	author = {Hall, Victoria Jane },
	title = {SARS-CoV-2 infection rates of antibody-positive compared  with antibody-negative health-care workers in England:  a large, multicentre, prospective cohort study (SIREN) /},
	url = {https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(21)00675-9/fulltext}
}