P.WONGSRI, K.KONGROS, P.SAKAEW, and W.TREEBUPHACHATSAKUL. 2018. “Preparation of Pooled Blood Samples to Use As a Proficiency Testing Material for Hemoglobin a1ctesting Byturbidimetric Inhibition Immunoassay”. International Journal of Pharma and Bio Sciences 9 (3):98-103. https://doi.org/10.22376/ijpbs.2018.9.3.b98-103.