Mishra, A., R. Pokhrel, U. Budhathoki, B. K. Yadav, V. K. Sharma, E. T. Tuladhar, A. Bhattarai, and M. Raut. “Six-Sigma Methodology for Quality Monitoring in a Teaching Hospital Biochemistry Laboratory in Nepal”. Journal of Institute of Medicine Nepal, vol. 43, no. 2, Aug. 2021, http://www.jiomnepal.com.np/index.php/jiomnepal/article/view/164.