@misc{indiciaef885fdb54296, title = {1990 Medicare/CLIA final rules for proficiency testing: minimum intralaboratory performance characteristics (CV and bias) needed to pass.}, author = {S S Ehrmeyer and R H Laessig and J E Leinweber and J J Oryall}, year = {1990}, url = {https://pubmed.ncbi.nlm.nih.gov/2170059/}, note = {Source identifier: 2170059} }