Cyclooxygenase-2 expression in Helicobacter pylori-associated premalignant and malignant gastric lesions.
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F. Chan | W. Leung | M. Go | J. Sung | K. To | E. Ng | A. S. Cheng | E. Ng | W. K. Leung | F. Chan | K. F. To | J. J. Sung | Alfred S.L. Cheng