FARKAS, E DIPHTHERIA: GRAVITY OF THE DISEASE AND ELECTROCARDIOGRAPHIC CHANGES. [electronic resource] - Acta paediatrica Academiae Scientiarum Hungaricae 1964 - 103-11 p. digital Publication Type: Journal Article ISSN: 0001-6527 Subjects--Topical Terms: AdolescentChildDiphtheriaElectrocardiographyGravitationHumansImmunizationVaccination