1 Department of Pneumonology, Medical School, University of Crete, Crete, Greece.
2 First Academic Department of Pneumonology, Interstitial Lung Diseases Unit, Hospital for Diseases of the Chest Sotiria, National and Kapodistrian University of Athens, Athens 11527, Greece.
3 Private Family Practice Unit in Heraklion, Heraklion, Greece.
4 First Academic Department of Pneumonology, Interstitial Lung Diseases Unit, Hospital for Diseases of the Chest Sotiria, National and Kapodistrian University of Athens, Athens 11527, Greece. Electronic address: debouros@med.uoa.gr.