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Prof Alexandra Barratt (MBBS, MPH, PhD) is a Professor of Public Health in the School of Public Health, University of Sydney. She has a background in epidemiological research spanning clinical epidemiology and public health epidemiology. She is recognised internationally for her research to quantify the benefits and harms (including overdiagnosis) of cancer screening, particularly breast cancer screening. She is a lead investigator on Wiser Healthcare, an NHMRC funded research collaboration to reduce overdiagnosis and overtreatment in healthcare (www.wiserhealthcare.org.au). Overdiagnosis is one of the biggest drivers of iatrogenic harm, waste and opportunity cost in healthcare and is a serious challenge for citizens, patients and healthcare services around the world.

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