“Factors Affecting The use Of Posbindu PTM Elderly In Medan Puskesmas Rantang Medan District Medan Petisah District In 2018”. Jurnal Kesehatan Komunitas, vol. 6, no. 1, Mei 2020, hlm. 121-8, https://doi.org/10.25311/keskom.Vol6.Iss1.523.