title: [QRS waves of spatial velocity ECG in idiopathic hypertrophic cardiomyopathy].
mesh_terms: D000368:Aged; D002312:Cardiomyopathy, Hypertrophic / Q000503:physiopathology*; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged