What professional affiliations does Dr. Christina Brennan have?
Dr. Christina Brennan is a member of the Clinical Trials Transformation Initiative, the oncology advisory board, Women in Bio, and the American College of Healthcare Executives, among others.
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### Instruction:
What professional affiliations does Dr. Christina Brennan have?

### Input: Not applicable

### Response:
Dr. Christina Brennan is a member of the Clinical Trials Transformation Initiative, the oncology advisory board, Women in Bio, and the American College of Healthcare Executives, among others.<|im_end|>