Manurung, Herna Rinayanti, Heru Santoso, Kintoko Rochadi, and Juanita Juanita. 2022. “Intervention Effects in Using an Application Compared With a Module With Pictures on Knowledge, Attitude, and Practice of the Pregnant Women in North Sumatra, Indonesia”. Open Access Macedonian Journal of Medical Sciences 10 (E):121-25. https://doi.org/10.3889/oamjms.2022.8125.