Efendi, J. R., E. Rekawati, H. permatasari, and U. Rachmawati. “Factors Associated With Frailty Syndrome in the Elderly: A Systematic Review”. Indonesian Journal of Global Health Research, Vol. 7, no. 4, Aug. 2025, pp. 17-26, doi:10.37287/ijghr.v7i4.6254.