Misolas, A., Eulogio, M. V., Go, M., Magat, L., Castillo, E., & Deoduco-Mercado, J. (2024). Proficiency Testing Program for Screening Drug Testing Laboratories in the Philippines, 2009-2019. PJP, 9(1), 27–36. https://doi.org/10.21141/PJP2024.05