Lars Wallentin is senior professor of Cardiology and founder of the Uppsala Clinical Research Centre (UCR) at Uppsala University Hospital, Uppsala, Sweden. He has been President of the Swedish Cardiac Society, founder and first President of the Swedish Heart Association. He also founded and was the first chairman of the Swedish Cardiovascular Registries. The research group of professor Wallentin has developed many new concepts concerning pathogenesis, diagnosis, risk stratification, and antithrombotic and interventional treatments in acute coronary artery disease and stroke prevention in atrial fibrillation. He has published more than 500 manuscripts in peer-reviewed journals and received several research awards.