Lagamayo, Dian, Rose Lou Marie Agbay, and Sarah Jane Datay-Lim. “Evaluation of the Effectiveness of Lean Six Sigma Approach for SARS-CoV-2 RT-PCR Turnaround Time (TAT) Improvement at a Hospital-Based Tertiary Laboratory”. PJP (January 22, 2023). Accessed June 6, 2023. https://philippinejournalofpathology.org/index.php/PJP/article/view/325.