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(A) Mean contact angles (SD) at the three biopsy sites in patients without H pylori infection as a function of age. Group I (n=31), Group II (n=23), Group III (n=14). (B) Mean contact angles (SD) at the three biopsy sites in patients with H pylori infection as a function of age. Group I (n=9), Group II (n=17), Group III (n=26).
