TY  - GEN
AU  - Johnston,R N
AU  - McNeill,R S
AU  - Smith,D H
AU  - Dempster,M B
AU  - Nairn,J R
AU  - Purvis,M S
AU  - Watson,J M
AU  - Ward,F G
TI  - Five-year winter chemoprophylaxis for chronic bronchitis
SN  - 0007-1447
PY  - 1969///1205
KW  - Adult
KW  - Bronchitis
KW  - prevention & control
KW  - Chronic Disease
KW  - Clinical Trials as Topic
KW  - Diarrhea
KW  - chemically induced
KW  - Diffusion
KW  - Humans
KW  - Male
KW  - Middle Aged
KW  - Placebos
KW  - Respiratory Function Tests
KW  - Seasons
KW  - Smoking
KW  - Spirometry
KW  - Sputum
KW  - analysis
KW  - Tetracycline
KW  - administration & dosage
KW  - Weather
N1  - Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial
UR  - https://doi.org/10.1136/bmj.4.5678.265
ER  -