Johann Klein was Professor of Obstetrics

Obstetrics

Obstetrics is the medical specialty dealing with the care of all women's reproductive tracts and their children during pregnancy , childbirth and the postnatal period...

 at the University of Salzburg

University of Salzburg

The University of Salzburg, or Paris Lodron University after its founder, the Prince Archbishop Paris Lodron, is located in the Austrian city of Salzburg, Salzburgerland, home of Mozart. It is divided into 4 faculties: catholic theology, law, humanities and natural science.Founded in 1622, it...

 and at the University of Vienna

University of Vienna

The University of Vienna is a public university located in Vienna, Austria. It was founded by Duke Rudolph IV in 1365 and is the oldest university in the German-speaking world...

. Johann Baptist Chiari

Johann Baptist Chiari

Johann Baptist Chiari was an Austrian gynecologist and obstetrician who was a native of Salzburg. In 1841 he received his medical doctorate at Vienna, where later he practiced obstetrics and gynecology for most of his professional career. He died in 1854 at the age of 37 from cholera...

 was his son-in-law. In Vienna, he was succeeded by professor Carl Braun in 1856.

In the maternity clinic at the Vienna General Hospital

Vienna General Hospital

The Vienna General Hospital is the University medical center of the city of Vienna, Austria. The AKH is the largest hospital of Austria and Europe, the second largest hospital in the world, and at 85-m high is one of the tallest hospital buildings in the world...

 there was a position as assistant to professor Klein. The position was held by:

• Eduard Lumpe
  Eduard Lumpe (obstetrician)
  Eduard Lumpe was an obstetrician working in Vienna General Hospital as assistant to professor Johann Klein. He is mainly known for compiling a list of causes for childbed fever in 1845, reflecting the insights at the time. The disease was predominantly epidemic, i.e. due to miasmatic influences...
  
  
• Franz Breit
  Franz Breit (obstetrician)
  Franz Breit was an obstetrician and assistant to professor Johann Klein of the maternity clinic at the Vienna General Hospital in Austria. He was appointed to professor and Chair of Obstetrics at University of Tübingen on 20 March 1847 allowing Ignaz Semmelweis to become Assistant to the professor...
  
  , (1843?)–1847 (except July 1, 1846 – Oct 20, 1846, where Semmelweis was Assistent)
• Ignaz Semmelweis
  Ignaz Semmelweis
  Ignaz Philipp Semmelweis was a Hungarian physician now known as an early pioneer of antiseptic procedures. Described as the "savior of mothers", Semmelweis discovered that the incidence of puerperal fever could be drastically cut by the use of hand disinfection in obstetrical clinics...
  
  , 1847–1849
• Carl Braun, 1849–1853

It was normal to grant the Assistent a two-year extension; indeed both Breit and Braun were granted extensions, Semmelweis was not however. Klein seems to have felt threatened by the younger members of the faculty, and he opposed both Semmelweis and his theories.
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