The beginning of the twentieth century was the golden age of all the inventions of the earth trembling. Especially in medical sciences, there are discoveries that cause many lives to save lives.
A prominent discovery of those times was Iron Lung, which gives respite to the relief of many people suffering from lung disease.
Iron lungs were used more in the treatment of polio diseases compared to other diseases. In 1955, due to vaccine discovery, this disease has become rare.
But in the 1940s and 50s it was very dangerous. This disease was particularly harmful for children. Those who used iron lang were mostly children. After becoming an adult, nobody usually used it.