Azmi, Mifaul, and Sri Sundari. “LEAN SIX SIGMA METHOD TO REDUCE LENGTH OF STAY IN EMERGENCY DEPARTMENT: SCOPING REVIEW”. Media Penelitian dan Pengembangan Kesehatan 35, no. 4 (November 28, 2025): 1403–1415. Accessed January 31, 2026. https://jurnal.polkesban.ac.id/index.php/jmp2k/article/view/3314.