https://en.wikipedia.org/wiki/Galen#Contributions_to_medicine" https://en.wikipedia.org/wiki/Galen#Contributions_to_medicin... Galen and Hippocrates vital humo

https://en.wikipedia.org/wiki/Galen#Contributions_to_medicine" https://en.wikipedia.org/wiki/Galen#Contributions_to_medicin... Galen and Hippocrates vital humors theory