Maaret Castrén is a nurse, an anesthesiologist and an emergency physician. She is working as the Head of the Department of Emergency Medicine and Services in Helsinki, Finland. She is leading the prehospital and emergency care for 1/3 of the population of Finland having over 800 000 patient contacts a year. She became the first professor of Emergency Medicine in Sweden at Karolinska Institutet 2007, and the first professor in EM in Finland at Turku University 2012 and at Helsinki University 2016. She has an international research group validated by external experts as excellent, near to outstanding. She is the Past Chair of European Resuscitation Council and the Honorary Secretary of ILCOR.