@misc{indiciae4fd891e5d882, title = {Laboratory data analysis system. V. Trend analysis.}, author = {R R Grams and E A Johnson and E S Benson}, year = {1972}, doi = {10.1093/ajcp/58.2.208}, url = {https://pubmed.ncbi.nlm.nih.gov/4558600/}, note = {Source identifier: 4558600} }