Ann Bowling is Professor of Health Sciences, University of Southampton, UK. She specialises in quality of life measurement, research on ageing and equity of access to health services, and is author of bestselling books on research methods and measurement including Measuring Disease, 2e, Measuring Health, 3e, and A Handbook of Health Research Methods jointly with Professor Shah Ebrahim, and Ageing Well: Quality of Life in Old Age (all published by Open University Press).