Hartono, R. K., S. A. Hamid, and M. Hafizurrachman. “Poor Physical Function As a Risk Factor for Non-Communicable Diseases in Indonesia: A Retrospective Cohort Study”. Acta Medica Indonesiana, vol. 52, no. 2, Aug. 2020, p. 111, https://actamedindones.org/index.php/ijim/article/view/1382.