Sulhattin Arslan1*, Levent Özdemir2, Yeltekin Demirel3 and Ibrahim Akkurt1
1Department of Chest Diseases, Faculty of Medicine, Cumhuriyet University, 58140 Sivas, Turkey.
2Department of Public Health, Faculty of Medicine, Cumhuriyet University, 58140 Sivas, Turkey.
3Department of Family Doctor, Faculty of Medicine, Cumhuriyet University, 58140 Sivas, Turkey.
