Vo TT, Bui TA, Le TT, Tran TTL, Vo TMT, Nguyen HT, et al. APPLICATION OF SIX SIGMA METHOD EVALUATING THE QUALITY OF BIOCHEMICAL TESTS AT PHUONG CHAU INTERNATIONAL HOSPITAL. CTJUMP [Internet]. 2023 Dec. 25 [cited 2026 Jul. 21];(69):43-50. Available from: https://tapchi.ctump.edu.vn/index.php/ctump/article/view/2225