1 ene 1775 año - Anesthesia
Descripción:
Discovered in 1775, Ether was used through the 19th century. With germ theory not becoming popular until the 20th century, surgeons began operating more and on risker patients. Led to massive influx of post-surgery infections.
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fecha:
1 ene 1775 año
Ahora mismo
~ 249 years ago