Vongsheree, Suthon, Soavanee Aromsuk, Piyawan Chainarongkuekul, and Awiruth Kejonnit. “Lower Frequency of Certain Nonconformities Against ISO/IEC 17025 After Many Year Accreditation”. Journal of Associated Medical Sciences 51, no. 1 (January 15, 2018): 19–25. Accessed May 3, 2024. https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/91330.