In 1945 a group of scientists from Jan Kazimierz University of Lvov came to Wroclaw. They undertook a difficult task of rebuilding the local Medical University, which was severely destroyed during the World War II, and organizing medical studies in postwar Wroclaw. 17 of 26 directors of theoretical chairs and clinics which were opened between 1945-50 came from Lvov. In the restored institutions they continued researches which they had begun before the outbreak of the war in 1939.