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Thorsteinsdóttir H, Daar AS, Smith RD, Singer PA.Thorsteinsdóttir H, et al. Among authors: singer pa.Lancet. 2003 Mar 15;361(9361):891-2. doi: 10.1016/S0140-6736(03)12786-9.Lancet. 2003.PMID: 12648966No abstract available.