Relationship of coronary heart disease to respiratory disability; investigation of a random sample of coal-workers aged 55-64 from a mining valley in South Wales.
D003031:Coal; D003327:Coronary Disease / Q000150:complications*; D006801:Humans; D008906:Mining; D009784:Occupational Diseases; D012119:Respiration; D014852:Wales
D003031:Coal
CORONARY DISEASE/complications; OCCUPATIONAL DISEASES; RESPIRATION