Bhatt, R. D., D. Tamrakar, B. Maharjan, R. Dual, R. K. Shrestha, S. Koju, and P. Risal. “Boost Up Quality Assurance through Regular Evaluation of Proficiency Testing Performance”. Annals of Clinical Chemistry and Laboratory Medicine, vol. 3, no. 1, Jan. 2018, pp. 3-7, doi:10.3126/acclm.v3i1.17296.