Complex sentence: Joanna Antonina Flatau (February 4,1928--April 19,1999) was a Polish psychiatrist who developed innovative techniques for treating nervous disorders and established psychiatry services for Warsaw students.
Split into simpler sentences: Joanna Antonina Flatau (February 4,1928--April 19,1999) was a Polish psychiatrist. She developed innovative techniques for treating nervous disorders and established psychiatry services for Warsaw students.