[Variability of respiratory symptoms and signs in a population during a 3-year period].
D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012140:Respiratory Tract Diseases / Q000175:diagnosis* / Q000453:epidemiology; D015022:Yugoslavia
Varijabilnost respiratornih simptoma i znakova u populaciji u razmaku od tri godine.