1. Department of Occupational Lung Diseases and Tuberculosis; “Sismanogleio - Amalia Fleming” General Hospital; Athens Greece
2. University of Applied Sciences/Technological Educational Institute (T.E.I.) of Athens, Faculty of Health and Caring Professions; Department of Medical Laboratories; Athens Greece
3. Department of Hygiene, Epidemiology and Medical Statistics; Medical School, National and Kapodistrian University of Athens; Athens Greece
4. Department of Cytopathology; Kalamata General Hospital; Kalamata Greece
5. Department of Cytopathology; Sismanogleio General Hospital; Athens Greece