Eduardo Massad is Fellow of the Institute of Mathematics and its Applications, Chartered Mathematician (IMA-UK), Chartered Scientist (SciCoun-UK), and Fellow of the Royal Society of Medicine. He has almost 40 years of experience in applying mathematical methods to medical problems and is co-editor of the Elsevier’s book Global Health Informatics: How Information Technology Can Change Our Lives in a Globalized World. Eleazar Chaib is Fellow of the Royal College of Surgery, UK. Former Honorary Registrar (1991-1993), Department of Surgery Addenbrooke’s Hospital, University of Cambridge Clinical School of Medicine, United Kingdom. He has 35 years of experience in liver transplantation