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Negredo E, Cruz L, Paredes R, Ruiz L, Fumaz CR, Bonjoch A, Gel S, Tuldrà A, Balagué M, Johnston S, Arnó A, Jou A, Tural C, Sirera G, Romeu J, Clotet B.Negredo E, et al.Clin Infect Dis. 2002 Feb 15;34(4):504-10. doi: 10.1086/324629. Epub 2002 Jan 2.Clin Infect Dis. 2002.PMID: 11797178Clinical Trial.