1.
Bratisl Lek Listy
; 80(3): 279-85, 1983 Sep.
Article
in Slovak
| MEDLINE
| ID: mdl-6627056
Subject(s)
Bronchitis/epidemiology , Aged , Bronchitis/diagnosis , Chronic Disease , Czechoslovakia , Female , Humans , Male , Smoking
2.
Bratisl Lek Listy
; 75(1): 75-80, 1981 Jan.
Article
in Slovak
| MEDLINE
| ID: mdl-7214174