Smoking and mortality from coalworkers' pneumoconiosis.
Sadler
R L
RL
Medical Boarding Centre (Respiratory Diseases), Swansen.
Roy
T J
TJ
D000368:Aged; D003032:Coal Mining; D004185:Disability Evaluation; D006801:Humans; D008297:Male; D008875:Middle Aged; D011009:Pneumoconiosis / Q000150:complications / Q000401:mortality*; D012907:Smoking / Q000009:adverse effects*; D014852:Wales