title: [Electrocardiogram in ischemic heart disease using different lead systems].
mesh_terms: D000328:Adult; D000368:Aged; D000787:Angina Pectoris / Q000175:diagnosis; D003327:Coronary Disease / Q000175:diagnosis*; D004562:Electrocardiography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged
vernacular_title: Elektrokardiogramma u bol'nykh ishemicheskoĭ bolezn'iu serdtsa v razlichnykh sistemakh otvedeniĭ.