title: Maximal QS 2 -interval shortening in acute coronary syndromes: experience with a simple method in fifty patients.
mesh_terms: D000328:Adult; D000368:Aged; D003327:Coronary Disease / Q000503:physiopathology*; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D010701:Phonocardiography