Dr. Luis Rodrigo MD was Emeritus Professor of Medicine at the University of Oviedo (Spain). He has been the Chief of Gastroenterology Service at the HUCA Hospital in Oviedo for more than 40 years. He obtained his PhD in 1975 and has a long teaching and research career. He has published a total of 585 scientific papers, 310 written in English with the rest in Spanish. He has participated as main investigator in a total of 45 clinical trials and has directed 40 doctoral theses. He has contributed actively to the formation of approximately one hundred specialists in gastroenterology working in his hospital and other hospitals in Spain and abroad. He has written approximately 35 chapters in books of several subjects and has been the editor of 22 books in his specialty and related diseases.