Simanjuntak, F.L. et al. 2022. Factors that Influence Low Mother Visits to Posyandu During the Covid-19 Pandemic in Nagasaribu Village V Districts Lintongnihuta Districts Humbang Hasundutan Year 2022. Science Midwifery. 10, 4 (Nov. 2022), 3469–3473. DOI:https://doi.org/10.35335/midwifery.v10i4.854.