Jean-Louis Gayet got his degrees of medical doctor at the University of Lyon (France). He is a specialist in cardiology and internal medicine. From 1981 to 1992, he worked in several pharmaceutical companies with responsibility for the development of drugs in various ﬁelds including rhythm disturbances, hypertension and contrast media. In 1992, he created the journal « Études & Evaluation Cardiovasculaires » of which he was the chief editor until 2000. Since 2000, he has been a consultant, specialised in medical writing and involved in continuous medical education programmes.