Jan Janský
Czech doctor, neurologist and psychiatrist / From Wikipedia, the free encyclopedia
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Jan Janský (Czech pronunciation: [ˈjan ˈjanskiː]; 3 April 1873 in Smíchov, now Prague – 8 September 1921 in Černošice, near Prague) was a Czech serologist, neurologist and psychiatrist. He is credited with the classification of blood into four types (I, II, III, IV).[1]
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Janský studied medicine at Charles University in Prague. From 1899, he worked in the Psychiatric Clinic in Prague. In 1914, he was named professor. During World War I Janský served two years as a doctor at the front until a heart attack disabled him. After the war he worked as a neuropsychiatrist in a military Hospital (Vojenská nemocnice). He had angina pectoralis and died of ischaemic heart disease.
Janský was also a proponent of voluntary blood donations.