?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Ulcers+and+Bacteria+I%3A+Discovery+and+Acceptance&rft.creator=Thagard%2C+P.&rft.subject=Cognitive+Psychology&rft.subject=Artificial+Intelligence&rft.subject=Philosophy+of+Science&rft.description=In+1983%2C+Dr.+J.+Robin+Warren+and+Dr.+Barry+Marshall+reported+finding+a+new+kind+of+bacteria+in+the+stomachs+of+people+with+gastritis.+Warren+and+Marshall+were+soon+led+to+the+hypothesis+that+peptic+ulcers+are+generally+caused%2C+not+by+excess+acidity+or+stress%2C+but+by+a+bacterial+infection.+Initially%2C+this+hypothesis+was+viewed+as+preposterous%2C+and+it+is+still+somewhat+controversial.+In+1994%2C+however%2C+a+U.+S.+National+Institutes+of+Health+Consensus+Development+Panel+concluded+that+infection+appears+to+play+an+important+contributory+role+in+the+pathogenesis+of+peptic+ulcers%2C+and+recommended+that+antibiotics+be+used+in+their+treatment.+Peptic+ulcers+are+common%2C+affecting+up+to+10%25+of+the+population%2C+and+evidence+has+mounted+that+many+ulcers+can+be+cured+by+eradicating+the+bacteria+responsible+for+them.&rft.date=1997&rft.type=Preprint&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F677%2F1%2Fulcers.htm&rft.identifier=++Thagard%2C+P.++(1997)+Ulcers+and+Bacteria+I%3A+Discovery+and+Acceptance.++%5BPreprint%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F677%2F