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RETRACTION GUIDELINES
Summary
Journal editors should consider retracting a publication if:
• theyhaveclearevidencethatthendingsareunreliable,eitherasaresultofmisconduct(e.g.data
fabrication)orhonesterror(e.g.miscalculationorexperimentalerror)
• thendingshavepreviouslybeenpublishedelsewherewithoutpropercrossreferencing,permissionor
justication(i.e.casesofredundantpublication)
• itconstitutesplagiarism
• itreportsunethicalresearch
Journaleditorsshouldconsiderissuinganexpressionofconcernif:
• theyreceiveinconclusiveevidenceofresearchorpublicationmisconductbytheauthors
• thereisevidencethatthendingsareunreliablebuttheauthors’institutionwillnotinvestigatethecase
• theybelievethataninvestigationintoallegedmisconductrelatedtothepublicationeitherhasnotbeen,
orwouldnotbe,fairandimpartialorconclusive
• aninvestigationisunderwaybutajudgementwillnotbeavailableforaconsiderabletime
Journal editors should consider issuing a correction if:
• asmallportionofanotherwisereliablepublicationprovestobemisleading(especiallybecauseofhonest
error)
• theauthor/contributorlistisincorrect(i.e.adeservingauthorhasbeenomittedorsomebodywhodoes
not meet authorship criteria has been included)
Retractions are not usually appropriate if:
• achangeofauthorshipisrequiredbutthereisnoreasontodoubtthevalidityofthendings
Notices of retraction should:
• belinkedtotheretractedarticlewhereverpossible(i.e.inallelectronicversions)
• clearlyidentifytheretractedarticle(e.g.byincludingthetitleandauthorsintheretractionheading)
• beclearlyidentiedasaretraction(i.e.distinctfromothertypesofcorrectionorcomment)
• bepublishedpromptlytominimizeharmfuleffectsfrommisleadingpublications
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RETRACTION GUIDELINES
• befreelyavailabletoallreaders(i.e.notbehindaccessbarriersoravailableonlytosubscribers)
• statewhoisretractingthearticle
• statethereason(s)forretraction(todistinguishmisconductfromhonesterror)
• avoidstatementsthatarepotentiallydefamatoryorlibellous
The purpose of retraction
Retraction is a mechanism for correcting the literature and alerting readers to publications that contain such
seriouslyawedorerroneousdatathattheirndingsandconclusionscannotbereliedupon.Unreliabledatamay
result from honest error or from research misconduct.
Retractionsarealsousedtoalertreaderstocasesofredundantpublication(i.e.whenauthorspresentthesame
datainseveralpublications),plagiarism,andfailuretodiscloseamajorcompetinginterestlikelytoinuence
interpretations or recommendations.
Themainpurposeofretractionsistocorrecttheliteratureandensureitsintegrityratherthantopunishauthorswho
misbehave.
Whatformshouldaretractiontake?
Noticesofretractionshouldmentionthereasonsandbasisfortheretraction,todistinguishcasesofmisconduct
fromthoseofhonesterror;theyshouldalsospecifywhoisretractingthearticle.Theyshouldbepublishedinall
versionsofthejournal(i.e.printand/orelectronic).Itishelpfultoincludetheauthorsandtitleoftheretractedarticle
in the retraction heading.
Retractedarticlesshouldbeclearlyidentiedassuchinallelectronicsources(e.g.onthejournalwebsiteandany
bibliographicdatabases).Editorsareresponsibleforensuringthatretractionsarelabelledinsuchawaythatthey
areidentiedbybibliographicdatabases(whichshouldalsoincludealinktotheretractedarticle).Theretraction
should appear on all electronic searches for the retracted publication.
Retractedarticlesshouldnotberemovedfromprintedcopiesofthejournal(e.g.inlibraries)norfromelectronic
archivesbuttheirretractedstatusshouldbeindicatedasclearlyaspossible.
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Whichpublicationsshouldberetracted?
Ifonlyasmallpartofanarticlereportsaweddata,andespeciallyifthisistheresultofgenuineerror,thenthe
problemisbestrectiedbyacorrectionorerratum.(Thetermerratumusuallyreferstoaproductionerror,causedby
thejournal.Thetermcorrigendum(orcorrection)usuallyreferstoanauthorerror.)Partialretractionsarenothelpful
becausetheymakeitdifcultforreaderstodeterminethestatusofthearticleandwhichpartsmaybereliedupon.
Similarly,ifonlyasmallsectionofanarticle(e.g.afewsentencesinthediscussion)isplagiarised,editorsshould
considerwhetherreaders(andtheplagiarisedauthor)wouldbebestservedbyacorrection(whichcouldnotethe
factthattextwasusedwithoutappropriateacknowledgement)ratherthanretractingtheentirearticlewhichmay
containsound,originaldatainotherparts.
Retractionshouldusuallybereservedforpublicationsthataresoseriouslyawed(forwhateverreason)thattheir
ndingsorconclusionsshouldnotbereliedupon.
Ifredundantpublicationhasoccurred(i.e.authorshavepublishedthesamedataorarticleinmorethanonejournal
withoutappropriatejustication,permissionorcrossreferencing)thejournalthatrstpublishedthearticlemay
issueanoticeofredundantpublicationbutshouldnotretractthearticleunlessthendingsareunreliable.Any
journalsthatsubsequentlypublisharedundantarticleshouldretractitandstatethereasonfortheretraction.
Ifanarticleissubmittedtomorethanonejournalsimultaneously,andisacceptedandpublishedinbothjournals
(eitherelectronicallyorinprint)atthesametime,precedencemaybedeterminedbythedateonwhichalicenceto
publishoracopyrighttransferagreementwassignedbytheauthors.
Incasesofpartialoverlap(i.e.whenauthorspresentsomenewndingsinanarticlethatalsocontainsasubstantial
amountofpreviouslypublishedinformation)editorsneedtoconsiderwhetherreadersarebestservediftheentire
articleisretractedorwhetheritwouldbebesttoissueanoticeofredundantpublicationclarifyingwhichaspects
hadbeenpublishedpreviouslyandprovidingappropriatecross-referencestotheearlierwork.Thiswilldependon
theamountofoverlap.Editorsshouldbearinmindthatthemainpurposeofretractionsistocorrecttheliterature
andensureitsintegrityratherthantopunishauthorswhomisbehave.
Onlypublisheditemscanberetracted.Guidelinesondealingwithredundantpublicationsidentiedinsubmitted
manuscriptscanbefoundintherelevantCOPEowchart[http://publicationethics.org/les/u2/01A_Redundant_
Submitted.pdf].Postinganalversiononawebsiteconstitutespublicationevenifanarticlehasnotappeared(or
willnotappear)inprint.Ifanarticleisretractedbeforeitappearsintheprintversionofajournal,theelectronic
versionshouldberetainedonthejournal’swebsitewithaclearnoticeofretractionanditshouldbeincludedon
bibliographicdatabases(e.g.withadigitalobjectidentier[doi]orotherpermanentcitationthatwilllocateit)
evenifitdoesnotappearintheprintedjournalandthereforedoesnotreceiveapageallocation.Thisisbecause
electronicversionsmayalreadyhavebeenaccessedandcitedbyresearcherswhoneedtobealertedtothefactthat
the article has been retracted.
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Whoshouldissuetheretraction?
Articlesmayberetractedbytheirauthor(s)orbythejournaleditor.Insomecases,retractionsareissuedjointlyor
onbehalfofthejournal’sowner(e.g.alearnedsocietyorpublisher).However,sinceresponsibilityforthejournal’s
contentrestswiththeeditors/heshouldalwayshavethenaldecisionaboutretractingmaterial.Journaleditors
mayretractpublications(orissueexpressionsofconcern)evenifallorsomeoftheauthorsrefusetoretractthe
publicationthemselves.
Whenshouldapublicationberetracted?
Publicationsshouldberetractedassoonaspossibleafterthejournaleditorisconvincedthatthepublicationis
seriouslyawedandmisleading(orisredundantorplagiarised).Promptretractionshouldminimizethenumberof
researcherswhocitetheerroneouswork,actonitsndingsordrawincorrectconclusions,suchasfrom‘double
counting’redundantpublicationsinmeta-analysesorsimilarinstances.
Ifeditorshaveconvincingevidencethataretractionisrequiredtheyshouldnotdelayretractionsimplybecause
theauthorsarenotcooperative.However,ifanallegationofmisconductrelatedtoapotentialretractionresultsin
adisciplinaryhearingorinstitutionalinvestigation,itisnormallyappropriatetowaitfortheoutcomeofthisbefore
issuingaretraction(butanexpressionofconcernmaybepublishedtoalertreadersintheinterim–seebelow).
Whatshouldeditorsdointhefaceofinconclusiveevidenceaboutapublication’sreliability?
Ifconclusiveevidenceaboutthereliabilityofapublicationcannotbeobtained(e.g.ifauthorsproduceconicting
accountsofthecase,authors’institutionsrefusetoinvestigateallegedmisconductortoreleasethendingsof
suchinvestigations,orifinvestigationsappearnottohavebeencarriedoutfairlyoraretakinganunreasonably
longtimetoreachaconclusion)editorsshouldissueanexpressionofconcernratherthanretractingthepublication
immediately.
Suchexpressionsofconcern,likeretractionnotices,shouldbeclearlylinkedtotheoriginalpublication(i.e.in
electronic databases and by including the author and title of the original publication as a heading) and should state
thereasonsfortheconcern.Ifmoreconclusiveevidenceaboutthepublication’sreliabilitybecomesavailablelater,
theexpressionofconcernshouldbereplacedbyanoticeofretraction(ifthearticleisshowntobeunreliable)orby
anexoneratingstatementlinkedtotheexpressionofconcern(ifthearticleisshowntobereliableandtheauthor
exonerated).
Shouldretractionbeappliedincasesofdisputedauthorship?
Authorssometimesrequestthatarticlesareretractedwhenauthorshipisdisputedafterpublication.Ifthereisno
reasontodoubtthevalidityofthendingsorthereliabilityofthedataitisnotappropriatetoretractapublication
solelyonthegroundsofanauthorshipdispute.Insuchcases,thejournaleditorshouldinformthoseinvolvedinthe
disputethats/hecannotadjudicateinsuchcasesbutwillbewillingtopublishacorrectiontotheauthor/contributor
listiftheauthors/contributors(ortheirinstitutions)provideappropriateproofthatsuchachangeisjustied.
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(Forauthorshipdisputesoccurringbeforepublication,seetherelevantCOPEowcharts.http://publicationethics.org/
les/u2/04A_Author_Add_Submitted.pdf and http://publicationethics.org/les/u2/04B_Author_Remove_Submitted.
pdf)
Canauthorsdissociatethemselvesfromaretractedpublication?
Ifretractionisduetotheactionsofsome,butnotall,authorsofapublication,thenoticeofretractionshould
mentionthis.However,mosteditorsconsiderthatauthorshipentailssomedegreeofjointresponsibilityforthe
integrityofthereportedresearchsoitisnotappropriateforauthorstodissociatethemselvesfromaretracted
publicationeveniftheywerenotdirectlyculpableofanymisconduct.
Aretheregroundsforlegalproceedingsifanauthorsuesajournalforretracting,orrefusingtoretract,a
publication?
Authorswhodisagreewitharetraction(orwhoserequesttoretractapublicationisrefused)sometimesthreaten
journaleditorswithlegalaction.Concernoverlitigationcanmakeeditorsreluctanttoretractarticles,especiallyin
the face of opposition from authors.
Journals’instructionsforauthorsshouldexplaintheretractionprocedureanddescribethecircumstancesunder
whicharticlesmightberetracted.Thisinformationshouldbeincorporated(e.g.byreferences)intoanypublishing
agreementsandbroughttotheauthors’attention.However,evenifthepublishingagreementorjournalinstructions
donotsetoutspecicconditionsforretraction,authorsusuallywouldnothavegroundsfortakinglegalaction
againstajournalovertheactofretractionifitfollowsasuitableinvestigationandproperprocedures.
However,legaladvicemaybehelpfultodetermineappropriatewordingforanoticeofretractionorexpressionof
concerntoensurethatthesearenotdefamatoryorlibellous.Nevertheless,retractionnoticesshouldalwaysmention
thereason(s)forretractiontodistinguishhonesterrorfrommisconduct.
Wheneverpossible,editorsshouldnegotiatewithauthorsandattempttoagreeaformofwordingthatisclearand
informativetoreadersandacceptabletoallparties.Ifauthorsconsenttothewordingofaretractionstatement,this
providesdefenceagainstalibelclaim.However,prolongednegotiationsaboutwordingshouldnotbeallowedto
delaythepublicationofaretractionunreasonablyandeditorsshouldpublishretractionsevenifconsensuscannot
be reached.
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RETRACTION GUIDELINES
Further reading
ICMJE guidelines: http://www.icmje.org/publishing_2corrections.html
SoxHC&RennieD.Researchmisconduct,retraction,andcleansingthemedicalliterature:lessonsfromthe
Poehlmancase.AnnalsofInternalMedicine2006;144:609-13
NathSB,MarcusSC&DrussBG.Retractionsintheresearchliterature:misconductormistakes?MJA2006;185:152-4
BuddJM.SievertM,SchultzTR.Phenomenaofretraction.JAMA1998;280:296-7
©2009COPE.Thisisanopen-accessarticledistributedunderthetermsoftheCreativeCommonsAttribution
License,whichpermitsunrestricteduse,distribution,andreproductioninanymedium,providedtheoriginalauthor
and source are credited.
September2009
ElizabethWager,VirginiaBarbour,StevenYentis,SabineKleinert
on behalf of COPE Council
ARCHIVED