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Gubala A, Davis S, Weir R, Melville L, Cowled C, Walker P, Boyle D.Gubala A, et al. Among authors: walker p.Virology. 2010 Mar 30;399(1):98-108. doi: 10.1016/j.virol.2009.12.013. Epub 2010 Jan 20.Virology. 2010.PMID: 20089287Free article.
Wang Y, McWilliam SM, Cowley JA, Walker PJ.Wang Y, et al. Among authors: walker pj.Virology. 1994 Aug 15;203(1):63-72. doi: 10.1006/viro.1994.1455.Virology. 1994.PMID: 8030285
Wang Y, Cowley JA, Walker PJ.Wang Y, et al. Among authors: walker pj.J Gen Virol. 1995 Apr;76 ( Pt 4):995-9. doi: 10.1099/0022-1317-76-4-995.J Gen Virol. 1995.PMID: 9049348