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Estrada CA, Mansfield CJ, Heudebert GR.Estrada CA, et al. Among authors: heudebert gr.J Gen Intern Med. 2000 Feb;15(2):108-15. doi: 10.1046/j.1525-1497.2000.03349.x.J Gen Intern Med. 2000.PMID: 10672114Free PMC article.