Dr. Ritz received his MD from Chicago Medical School in 1972, followed by residency in internal medicine at the University of Wisconsin Hospital and Clinics, Madison. He completed a clinical fellowship in hematology and oncology at Beth Israel Hospital, and a research fellowship at DFCI, where he joined the staff in 1980. Since 1996, he has been director of the Connell and O'Reilly Families Cell Manipulation Core.
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