title: Electrocardiographic changes in systemic hypertension. (A study of Tanzanian Africans).
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001145:Arrhythmias, Cardiac / Q000175:diagnosis; D006332:Cardiomegaly / Q000175:diagnosis; D002648:Child; D004562:Electrocardiography; D005260:Female; D006801:Humans; D006973:Hypertension / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D013636:Tanzania