?:authorAffiliation
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[\'Division of Digestive and Liver Diseases, Department of Medicine, Columbia University Irving Medical Center, New York, New York, USA.\', \'Division of General Medicine, Department of Medicine, Columbia University Irving Medical Center, New York, New York, USA.\', \'Department of Epidemiology, Mailman School of Public Health, Columbia University Irving Medical Center, New York, New York, USA.\']
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