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Anda P, Sánchez-Yebra W, del Mar Vitutia M, Pérez Pastrana E, Rodríguez I, Miller NS, Backenson PB, Benach JL.Anda P, et al. Among authors: benach jl.Lancet. 1996 Jul 20;348(9021):162-5. doi: 10.1016/s0140-6736(96)02332-x.Lancet. 1996.PMID: 8684157