Sjoerd Repping is professor of Appropriate Care at the Amsterdam University Medical Centers and chair of the Healthcare Evaluation and Appropriate Use program. Originally trained as a clinical embryologist, Sjoerd has focused his career in the past decade on how to ensure that medical care is evidence based. He currently runs a national program in which patients, doctors, nurses, hospitals, insurers and the national government collaborate to make healthcare evaluation and appropriate use an integral part of medical care in the Netherlands.