title: DIPHTHERIA: GRAVITY OF THE DISEASE AND ELECTROCARDIOGRAPHIC CHANGES.
mesh_terms: D000293:Adolescent; D002648:Child; D004165:Diphtheria; D004562:Electrocardiography; D006112:Gravitation; D006801:Humans; D007114:Immunization; D014611:Vaccination
keywords: ADOLESCENCE; CHILD; DIPHTHERIA; ELECTROCARDIOGRAPHY; IMMUNIZATION