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Hill AN, Becerra J, Castro KG.Hill AN, et al.Epidemiol Infect. 2012 Oct;140(10):1862-72. doi: 10.1017/S095026881100286X. Epub 2012 Jan 11.Epidemiol Infect. 2012.PMID: 22233605
Becerra JE, Atrash HK, Pérez N, Saliceti JA.Becerra JE, et al.Am J Public Health. 1993 Nov;83(11):1572-6. doi: 10.2105/ajph.83.11.1572.Am J Public Health. 1993.PMID: 8238681Free PMC article.
Becerra JE, Smith JC.Becerra JE, et al.Am J Public Health. 1988 Mar;78(3):268-72. doi: 10.2105/ajph.78.3.268.Am J Public Health. 1988.PMID: 3341495Free PMC article.
Becerra JE, Smith JC.Becerra JE, et al.Am J Public Health. 1990 Jun;80(6):694-7. doi: 10.2105/ajph.80.6.694.Am J Public Health. 1990.PMID: 2343952Free PMC article.