title: Establishment of normal ECG amplitude/frequency values: a potential basis for early detection of coronary heart disease in aviation personnel.
mesh_terms: D000328:Adult; D000337:Aerospace Medicine; D003327:Coronary Disease / Q000175:diagnosis*; D004562:Electrocardiography / Q000379:methods*; D005080:Exercise Test; D006801:Humans; D008297:Male; D013997:Time Factors