1 | Center for Global Tobacco Control, Department of Social and Behavioral Sciences, Harvard School of Public Health, Boston, USA |
2 | Smoking and Lung Cancer Research Center, Hellenic Cancer Society, Athens, Greece |
3 | Biomedical Research Foundation of the Academy of Athens, Athens, Greece |
4 | Department of Social Medicine, Clinic of Social and Family Medicine, University of Crete, Heraklion, Greece |
5 | 1st Respiratory Department, University of Athens, Medical School, Sotiria Hospital, Athens, Greece |