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Spirometry Then and Now | PFT History
Spirometry: A Historical Gallery Up to 1905 - IEEE Pulse
Spirometry Then and Now | PFT History
Exploring the 175-year history of spirometry and the vital lessons it can teach us today | European Respiratory Society
Spirometry: A Historical Gallery Up to 1905 - IEEE Pulse
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Spirometry: A Historical Gallery Up to 1905 - IEEE Pulse
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