Witness History - The invention of the modern ventilator - ³ÉÈË¿ìÊÖ Sounds

Witness History - The invention of the modern ventilator - ³ÉÈË¿ìÊÖ Sounds


The invention of the modern ventilator

How a polio epidemic in Denmark in 1952 led to the invention of the modern ventilator

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