Pierre A. Clavien is a world-renowned surgeon-scientist, currently professor and head of the Department of Surgery in Zurich, Switzerland. After a Swiss commission on surgery, he moved to Toronto, Canada, to complete a doctoral program in organ preservation and a clinical fellowship in BPH surgery and transplantation. He then moved to Duke University in Durham, North Carolina, to lead the transplant and HPB programs. Since 1994, he has directed an active basic science laboratory funded by grants from NIH and Switzerland and other private and non-private funding sources. His areas of research include organ preservation, liver regeneration, and BPH cancer, as well as outcome research with a well-established system for classifying complications by severity. He is currently a member of the editorial board or associate editor of several high-level international journals. He has received numerous awards and scholarships, including one of the most prestigious awards for scientific research, the Otto Naegeli Prize and the European Prize for Gastroenterology (UEGW) for his research on partial liver transplant. He has also written several books, including the very popular “Medical Care for the Liver Transplant recipient” and the Atlas of Surgery for Upper GI and BPH, with a new edition this year.