Butarbutar, Maria Haryanti, Zulfikar, Ani Deswita Chaniago, Agnes Ferusgel, and Noami Isabella Hutabarat. 2021. “Factors Associated With the Incidence of Hypertension in the Elderly at the Millenium Clinic in Medan”. Science Midwifery 9 (2):237-42. https://www.midwifery.iocspublisher.org/index.php/midwifery/article/view/78.