Atanas Dimitrov Hilendarov, DO, Doctor, DPhil, PhD, Adjunct Associate Professor, Assistant Professor, Associate Professor, Associate Research Scientist, Associate Specialist, Consultant Physician-Scientist, Doctor, Intermediate Editor, Occupational Physician, Research Associate, Senior Editor, Senior Researcher, Department of Imaging Diagnostics, Nuclear Medicine and Radiation, Medical University - Plovdiv, Plovdiv 4002, Plofvdiv, Bulgaria