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Siegel M, Biener L.Siegel M, et al.Am J Public Health. 2000 Mar;90(3):380-6. doi: 10.2105/ajph.90.3.380.Am J Public Health. 2000.PMID: 10705855Free PMC article.
Skeer M, George S, Hamilton WL, Cheng DM, Siegel M.Skeer M, et al. Among authors: siegel m.Am J Public Health. 2004 Feb;94(2):286-92. doi: 10.2105/ajph.94.2.286.Am J Public Health. 2004.PMID: 14759944Free PMC article.