[Observation on P wave dispersion and atrial arrhythmia of patients with coal workers' pneumoconiosis].
Boa
Ying
Y
Wang
De-Jun
DJ
D000368:Aged; D055008:Anthracosis / Q000503:physiopathology*; D001145:Arrhythmias, Cardiac / Q000503:physiopathology*; D016022:Case-Control Studies; D004562:Electrocardiography; D006801:Humans; D008875:Middle Aged