Nguyen PT, Phan MT, Nguyen NN, Nguyen TBT, Tran TN, Ha TTM. APPLICATION OF SIX SIGMA METHOD IN QUALITY CONTROL OF SOME BIOCHEMICAL TESTS AT THE LABORATORY DEPARTMENT OF CAN THO DERMATO - VENEREOLOGY HOSPITAL. ctump. 2025;(9TA):1-7. doi:10.58490/ctump.2025i9TA.3331