Dr. Didier Roulin is a senior fellow in Hepato-Pancreato-Biliary (HPB) surgery at Lausanne University Hospital (CHUV) in Switzerland. He is also holding a position of senior lecturer and Privat Docent at Lausanne University. He has been actively involved in Enhanced Recovery After Surgery (ERAS) for more than ten years with more than twenty publications and book chapters in this field. He is also implicated in the implementation of enhanced recovery programs in different countries.