Hidayat, AR, Rismanudin Rismanudin, Muhammad Evendi Halulanga, Suparman Suparman, and Tomic Minzathu. “Profitability Behind Safety: An Analysis of the Correlation Between Investment in Personal Protective Equipment (PPE) and Operational Efficiency and Nursing Staff Productivity”. Indonesian Journal of Global Health Research 8, no. 2 (April 13, 2026): 1093–1100. Accessed April 18, 2026. https://jurnal2.globalhealthsciencegroup.com/index.php/IJGHR/article/view/1868.