Ramadhani A, Untiami NP, Sabrina R, Iswanto AH. Evaluation of lean six sigma implementation in reducing patient waiting time in hospitals: A literature review. IJHS [Internet]. 11 Juni 2026 [dikutip 15 Juni 2026];6(3):441-52. Tersedia pada: https://jurnalku.org/index.php/ijhs/article/view/2209