Susi Jumiani, and Ardi Bastian. “Structural Intervention in Increasing Covid-19 Vaccination Achievements in the Elderly Group in Banaran Kulon Village, Bagor District, Nganjuk Regency”. Indonesian Journal of Nutritional Epidemiology and Reproductive, vol. 6, no. 3, Sept. 2023, pp. 76-82, doi:10.30994/ijner.v6i3.302.