Dr. Luis Rodrigo MD is 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 developed a long teaching and research career. He has published a total of 552 scientific papers, 290 written in English and the rest in Spanish. He has participated as main investigator in a total of 45 clinical trials. He has contributed actively to the formation of one hundred specialist in Gastroenterology working in his Hospital. He has written around 35 chapters in books of several subjects and has been the editor of 15 books in his speciality.