Konstantinos E. Farsalinos, M.D., is a research fellow at the Onassis Cardiac Surgery Center in Athens-Greece, at the Department of Pharmacy, University of Patras-Greece and at the National School of Public Health-Greece. He has been conducting laboratory and clinical research on e-cigarettes as a principal investigator since 2011. Examples of his work include the first study on the cytotoxic effects of e-cigarette vapor on cultured cells and the immediate effects of e-cigarette use on cardiac function and coronary circulation. He ran a worldwide online survey of almost 20,000 vapers (users of e-cigarettes) identifying patterns of use and experience with e-cigarettes among consumers, published in 2014. He has analyzed patterns of e-cigarette use based on large European and US population surveys (Eurobarometer, National Youth Tobacco Survey). Additionally, he is performing research work on heated tobacco products. His research findings have been presented in major international scientific congresses and his studies were used in preparing the regulatory framework on e-cigarettes by the European Union. As of early 2018, he has published more than 60 studies and articles in international peer-reviewed scientific journals about smoking, tobacco harm reduction, and e-cigarettes. He was the handling editor and author in a book titled "Analytical assessment of e-cigarettes", published by Elsevier in 2017.