Prof. Dr. Stanislaw Klek studied at the Jagiellonian University Medical College in Krakow (1991-1997), where he also obtained a PhD degree (2003). He was nominated Assoc. Professor in 2012, full Professor in 2017. He became specialist in general surgery (2005) and oncological surgery (2008). The Head of the General Surgery Unit with the Intestinal Failure Center in Stanley Dudrick’s Memorial Hospital in Skawina, Poland (2010-2020). In charge of the Cracow HPN center since 1999. Currently, he is the Head of the Surgical Oncology Clinic at the National Cancer Institute in Krakow. Stanislaw Klek has published more than 200 original articles, 30 case reports, 18 book chapters, and over 100 congress abstracts. He was one of the first recipients of the European ESPEN Diploma (2010) and of the first ESPEN LLL Teachers (2008). He is currently the Chairman of the Polish Society for Parenteral, Enteral Nutrition and Metabolism (POLSPEN). He is the member of ESPEN Special Interest Group on Acute Intestinal Failure. Chairman of the International Section of ASPEN and the President of the 41st ESPEN Congress in 2019. Interested in film, music, and sports (completed 7 Ironman 140.6 races, 7 Ironman 70.3 races, 6 olympic triathlons, and 18 marathons).