Konstantinos Farsalinos, MD, MPH is a cardiologist and researcher at the Onassis Center for Cardiac Surgery in Athens-Greece, at the Department of Pharmacy of the University of Patras-Greece and at the National School of Public Health of Greece. He specialises in echocardiography and research on harm reduction from smoking and tobacco. He was the principal investigator in the Intervendor Study, a joint research project of the European and American Societies of Echocardiography. He has been conducting laboratory, clinical and epidemiological research on smoking, tobacco harm reduction and e-cigarettes as a principal investigator since 2011. As of 2019, he has published more than 70 studies and articles in peer-reviewed international scientific journals on smoking, tobacco, harm reduction, and e-cigarettes. He was editor-in-charge and author of a book titled “Analytical Evaluation of Electronic Cigarettes,” published by Elsevier in 2017. He is currently the author with the most peer review publications on electronic cigarettes worldwide.