Helen Ranney
Encyclopedia
Helen Ranney was an American doctor
Physician
A physician is a health care provider who practices the profession of medicine, which is concerned with promoting, maintaining or restoring human health through the study, diagnosis, and treatment of disease, injury and other physical and mental impairments...

 and hematologist that researched Sickle Cell Anemia. Ranney was a faculty member, and the first female head of the department of medicine at the University of California, San Diego School of Medicine. She attended medical school at Columbia University.
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