The 102 ABWUs were reviewed by readers on a review station brought by the research assistant acting as a monitor. They worked approximately 8 h daily for 3 days, with breaks at the readers’ choosing. The readers were given the corresponding mammograms with each AWBU and completed the second half of the data sheet with the knowledge from the mammogram-only evaluation available. The same questions were answered for AWBU and the reading time of each AWBU recorded.