Rocca al Mare School;
Tallinn;
Estonia;
Department of Public Health;
University of Tartu;
Tartu;
Estonia;
Department of Thoracic Surgery;
Tartu University Hospital;
Tartu;
Estonia;
Lung Clinic;
Tartu University;
Tartu;
Estonia;
Smoking; Lung; Cancer; Risk; Factors; Symptoms; Public; Awareness;