Indrawati, Ana, Muhammad Badira, and Imam Muhammad. 2020. “Factors Affecting the Maintenance of Dental and Oral Health in Children of Elementary School of Harapan 1 Class 3 in Sumber Mulyo Rejo District Madya Binjai City”. Journal La Medihealtico 1 (5), 1-5. https://doi.org/10.37899/journallamedihealtico.v1i5.147.