?:authorAffiliation
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[\'Division of Gastroenterology, Duke University, Durham, NC 27710, USA.\', \'Division of Gastroenterology, Durham VA Medical Center, Durham, NC 27705, USA.\', \'VA Cooperative Studies Program Epidemiology Center, Durham VA Health Care System, Durham, NC 27705, USA.\', \'Department of Medicine, Duke University, Durham, NC 27710, USA.\', \'Duke Cancer Institute, Duke University School of Medicine, Duke University Health Care System, Durham, NC 27710, USA.\', \'Division of Infectious Diseases, Duke University School of Medicine, Durham, NC 27710, USA.\', \'Infectious Diseases Section, Durham VA Health Care System, Durham, NC 27705, USA.\']
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