Ph.D. in Pharmaceutical Sciences. Full Professor and Consulting Professor of the Institute of Pharmacy and Food of Havana University, Cuba. Dr. León has published more than 60 research studies in international scientific magazines and has been author of books and chapters of books about Ozone Therapy. She has tutored more than 10 Doctoral (PhD) theses and more than 20 MSc theses mainly within the field of medical ozone and its clinical applications. Has received several acknowledgements for her outstanding scientific-educational work: Awards of the Council of State of Cuba in many occasions and Special Award of the Ministry of Higher Education, awards of the Rector of Havana University and is vanguard of the National Science Union, among others.