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Stephen S. Leff, PhD

Stephen S. Leff

Dr. Leff's background is in child clinical psychology, and he has broad training and expertise in intervention research, mixed methods, and in leading a range of federally funded research initiatives. His research goal is to use community-based participatory research (CBPR) to develop and validate school-based aggression and bullying intervention programs and assessment tools for urban minority youth.

Michelle A. Lewis, MS, CRA

Michelle A. Lewis

Directly overseeing several Research Administration departments that support investigators in their day-to-day needs, while looking for ways to enhance teamwork and collaboration.

Elizabeth Lowenthal, MD, MSCE

Elizabeth Lowenthal Headshot

Dr. Lowenthal's work is focused on addressing health priorities for children in resource-limited settings. In addition to research projects she serves as research director for the Children's Hospital of Philadelphia Global Health Center, supporting junior researchers (and senior researchers newly working in international settings) to develop projects addressing other health priorities for children in resource-limited settings.