Ramadhani, Assyifa, Nadia Putri Untiami, Reynanda Sabrina, dan Acim Heri Iswanto. 2026. “Evaluation of Lean Six Sigma Implementation in Reducing Patient Waiting Time in Hospitals: A Literature Review”. Indonesian Journal of Health Science 6 (3):441-52. https://doi.org/10.54957/ijhs.v6i3.2209.