TY  - RPRT
TI  - Smoking, lung function, and rheumatoid factors.
AU  - T Tuomi
AU  - M Heliövaara
AU  - T Palosuo
AU  - K Aho
PY  - 1990
DO  - 10.1136/ard.49.10.753
UR  - https://pubmed.ncbi.nlm.nih.gov/2241263/
ID  - 2241263
ER  -