John Marshall is a Professor of Surgery at the University of Toronto, an intensivist at St. Michael’s Hospital, and a Senior Investigator in the Keenan Research Centre for Biomedical Science. He has published more than 475 manuscripts and book chapters, and has been cited more than 100,000 times. He is the founding chair of the International Forum of Acute Care Trialists (InFACT) – a global network of 37 investigator-led critical care clinical research groups and vice-chair of the International Severe Acute Respiratory and Emerging Infections Consortium. He has given more than 1000 invited lectures at more than 500 meetings around the world, and is an Associate Editor of the journals Critical Care Medicine and Critical Care.