cochrane collaboration peter sawicki holger schünemann helle ploug hansen f david evelyn whitlock moher klaus ian ebm evidence-based health ebhc strategic plan evidence-based medicine translation knowledge transfer systematic reviews cochrane library impact factor vandenbroucke jan brian leonila haynes pekka mustonen tikki dans pang tore richard horton leisinger sophie hill marguerite garner paul silvio garattini eric stephen senn godal janet wale anders olauson john bridgesj marcia kelson abadie doug andrew herxheimer lisa bero shawna mercer slutsky jean lester firkins martin burton alison little sean tunis lorne becker graham gail wilensky sally morton mccrory sharon straus jüni koster dave booker johannes forster kleijnen antes linde josé gerald gartlehner gerd bernd richter chalmers
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