Anton de Haen

He became a very influential physician in the Habsburg monarchy and eventually founded the Viennese Medicine School.

He studied medicine in Leiden under Hermann Boerhaave, and in 1754 went to the University of Vienna, where he became head of its medical clinic.

At Vienna, Anton de Haen was an associate to Gerard van Swieten, whom he worked with in the establishment of structured medical classes.

He was one of the first physicians to make routine use of the thermometer in medicine, and perceived that temperature was a valuable indication of illness and health.

Among his written works was Ratio medendi in nosocomio practico, of which 18th century Viennese hospital practices and case histories are discussed.