Syphilis. Untreated syphilis in male Negro: 2, Mortality during 12 years of observation [with list of references, by] J. R. Heller, jr., P. T. Bruyere; Effect of treated acquired syphilis on life expectancy, [by] Dudley C. Smith, Martha C. Bruyere; Mortality trends for syphilis, [by] Lida J. Usilton.

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