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2. A review of platelet counting performance in the United States;Wertz;Am J Clin Pathol,1980
3. Automated platelet counts, Accuracy, precision and range;Ross;Am J Clin Pathol,1980
4. Reference preparations for calibration of platelet counting instruments;Clarke;Med Lab Sci,1981
5. Platelet counting — development of a reference method and a reference preparation;Lewis;Clin Lab Hematol,1979