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Fig. 3F —Histograms of polyp conspicuity for both observers stratified
by polyp size. Light gray indicates air and dark gray indicates tagged
material. Histograms for observer 1, all data (A); observer 2, all data
(B); observer 1, size < 10 mm (C); observer 2, size < 10
mm (D); observer 1, size
10 mm (E); and observer 2, size
10 mm (F).