Hlongwane, S., Ngongoni, C., & Grobbelaar, S. S. (Saartjie). (2019). A PATIENT-CENTRIC SIX-SIGMA DECISION SUPPORT SYSTEM FRAMEWORK FOR CONTINUOUS QUALITY IMPROVEMENT IN CLINICS. The South African Journal of Industrial Engineering, 30(3), 224–237. https://doi.org/10.7166/30-3-2241