Unknown.The ef value is selected by the user via a drop-down menu.Once the drop-down menu has been selected, the ef value can be changed by the up and down arrow keys.The user did not change focus from the drop-down menu in the advanced reporting window to the viewer window before using the arrow keys in an attempt to move to the next image.This caused the selected ef value to unknowingly changed.If any additional relevant information becomes available, a supplemental report will be submitted.Ref: internal complaint number (b)(4).
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