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1IntroductionManyrecentforeignanddomesticreportsshowedthehumanserumpepsinogen(PG)levelswerevaluableinthediagnosisofgastricdis...
1IntroductionManyrecentforeignanddomesticreportsshowedthehumanserumpepsinogen (PG) levelswerevaluableinthediagnosisofgastricdis ...