Description of Ownership of the MCH Handbook and Utilization of the MCH Handbook and the Nutritional Status of Toddlers in Pekanbaru City and Meranti District During the COVID-19 Pandemic. JPK : Jurnal Proteksi Kesehatan. 2022;9(2):48-53. Accessed January 18, 2026. https://jurnal.pkr.ac.id/JPK/article/view/707