Pelupessy JM, Makmur R, Daud D. Bull-Neck, Electrocardiographic Changes and Creatine Phosphokinase Blood Levels in Patients with Diphtheria. PI [Internet]. 31Dec.1991 [cited 8May2024];31(11-12):303-1. Available from: https://paediatricaindonesiana.org/index.php/paediatrica-indonesiana/article/view/1452