Kim MJ, Park Q, Kim MH, Shin JW, Kim HO. Comparison of the Accuracy of Noninvasive Hemoglobin Sensor (NBM-200) and Portable Hemoglobinometer (HemoCue) with an Automated Hematology Analyzer (LH500) in Blood Donor Screening. Ann Lab Med 2013;33:261-267. https://doi.org/10.3343/alm.2013.33.4.261