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Weinblatt E, Shapiro S, Frank CW.Weinblatt E, et al.Am J Public Health. 1973 Jul;63(7):577-93. doi: 10.2105/ajph.63.7.577.Am J Public Health. 1973.PMID: 4716368Free PMC article.No abstract available.
Weinblatt E, Shapiro S, Frank CW.Weinblatt E, et al.Am J Public Health. 1971 Apr;61(4):831-42. doi: 10.2105/ajph.61.4.831.Am J Public Health. 1971.PMID: 5139760Free PMC article.No abstract available.