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Start Over Subjects Spirometry ✖Remove constraint Subjects: Spirometry Titles The mutual interest of the medical profession and insurance companies in the prolongation of life ✖Remove constraint Titles: The mutual interest of the medical profession and insurance companies in the prolongation of life Dates by Range 1850-1899 ✖Remove constraint Dates by Range: 1850-1899

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  • The mutual interest of the medical profession and insurance companies in the prolongation of life1