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Oliveira LB, Louvanto K, Ramanakumar AV, Franco EL, Villa LL, For The Ludwig-McGill Cohort Study.Oliveira LB, et al. Among authors: louvanto k.J Gen Virol. 2013 Aug;94(Pt 8):1858-1864. doi: 10.1099/vir.0.052811-0. Epub 2013 May 15.J Gen Virol. 2013.PMID: 23677790Free PMC article.