?:authorAffiliation
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[\'Division of Gastroenterology and Hepatology, University of Pennsylvania, Philadelphia, Pennsylvania, USA.\', \'Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, Pennsylvania, USA.\', \'Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania, Philadelphia, Pennsylvania, USA.\', \'Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA.\', \'Center for Health Care Innovation, University of Pennsylvania, Philadelphia, Pennsylvania, USA.\']
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