Utama, F., Wahjuni, C.U. and Martini, S. 2014. Determinants of Clinical Diphtheria After Sub National Diphtheria Immunization Days in 2012 at Bangkalan. Jurnal Berkala Epidemiologi. 2, 1 (Jan. 2014), 71–82. DOI:https://doi.org/10.20473/jbe.V2I12014.71-82.