TY  - RPRT
TI  - Pulmonary function differences in normal smoking and nonsmoking, middle-aged, white-collar workers.
AU  - R A Krumholz
AU  - E C Hedrick
PY  - 1973
DO  - 10.1164/arrd.1973.107.2.225
UR  - https://pubmed.ncbi.nlm.nih.gov/4683580/
ID  - 4683580
ER  -