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This polio survivor is one of the last still using an iron lung ... - NPR
The Iron Lung - Science Museum
Paul Alexander (polio survivor) - Wikipedia
The use of iron lungs as treatment for polio
What Is an Iron Lung, and How Does It Work? - Discover Magazine
Iron lung | Description, History, & Polio | Britannica
The man in the iron lung: How Paul Alexander lived life to the full - BBC
Texas Man Who Lived 70 Years in an Iron Lung ... - Smithsonian Magazine
Lifesaving Breath - Harvard Medical School
Man in an iron lung since age 6 dies at 78 : NPR