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Behr MA, Warren SA, Salamon H, Hopewell PC, Ponce de Leon A, Daley CL, Small PM.Behr MA, et al. Among authors: hopewell pc.Lancet. 1999 Feb 6;353(9151):444-9. doi: 10.1016/s0140-6736(98)03406-0.Lancet. 1999.PMID: 9989714