Complex sentence: In 1952 he was elected president of the German Association for Child and Youth Psychiatry; and in 1954 became the head of the medical department of Philipps University of Marburg.
Split into simpler sentences: In 1952 he was elected as the president of the German Association for Child and Youth Psychiatry. In 1954 he became the head of the medical department of Philipps University of Marburg.