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Gabriel E, Wilson DJ, Leatherbarrow AJ, Cheesbrough J, Gee S, Bolton E, Fox A, Fearnhead P, Hart CA, Diggle PJ.Gabriel E, et al.Epidemiol Infect. 2010 Oct;138(10):1384-90. doi: 10.1017/S0950268810000488. Epub 2010 Mar 5.Epidemiol Infect. 2010.PMID: 20202286Free article.