Professor Mathieu Pasquier is an emergency physician from the University Hospital of Lausanne in Switzerland (CHUV), in charge of the prehospital service of the Emergency Department. He is dedicated to prehospital and hospital acute care (trauma and medical emergencies) as well as mountain medicine. Mathieu is an active member of the medical commission of the International Commission for Alpine Rescue (ICAR). He is author of numerous publications on various topics in emergency medicine including several landmark publications on accidental hypothermia. Mathieu has notably developed and validated the HOPE score, which provides a prediction of the survival probability in hypothermic cardiac arrest patients undergoing extra-corporeal life support rewarming (www.hypothermiascore.org). Outside his research and hospital activities, Mathieu is an active mountaineer and works as a helicopter doctor since 2006, including in mountain rescue.