1.
J Med Assoc Ga
; 68(9): 819-22, 1979 Sep.
Article
in English
| MEDLINE
| ID: mdl-479716
Subject(s)
Smoking Prevention , Adult , Aged , Evaluation Studies as Topic , Female , Humans , Male , Middle Aged , Time Factors
2.
Am Rev Respir Dis
; 102(6): 992-6, 1970 Dec.
Article
in English
| MEDLINE
| ID: mdl-5486238