How many movies have Eduard von Winterstein and Georg C. Klaren collaborated on?

They have worked on 4 movies together! Their first movie together was Gern hab' ich die Frauen geküßt (1926) while their highest rated movie together was Semmelweis – Retter der Mütter (1950). They have not worked together since The Sonnenbrucks (1951). They are most known for their drama films together.