Hirunwong P. A Development of CBC Quality Control System by Application of Sigma Metric in OPD Laboratory at Queen Savang Vadhana Memorial Hospital. HCUJOURNAL [Internet]. 2021 Jun. 30 [cited 2024 May 8];25(1):53-62. Available from: https://he01.tci-thaijo.org/index.php/HCUJOURNAL/article/view/241479