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. Author manuscript; available in PMC: 2011 Jul 26.
Published in final edited form as: Dis Esophagus. 2009 Jun 9;23(1):13–19. doi: 10.1111/j.1442-2050.2009.00991.x
Greenwald Horwhat Abrams Lightdale Dumot
Substantial contributions to conception and design, acquisition of data, or analysis and interpretation of data X X X X X
Drafting the article or revising it critically for important intellectual content X X X X X
Final approval of the version to be published X X X X X