Aini, Zahratul, Eti Poncorini Pamungkasari, and Ari Probandari. 2019. “Roles of Doctors at Health Centres in Applying Principles of Family Medicine to Prevent Diptheria in Banda Aceh”. JKKI : Jurnal Kedokteran Dan Kesehatan Indonesia 10 (3):229-38. https://doi.org/10.20885/JKKI.Vol10.Iss3.art5.