?:authorAffiliation
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[\'Division of Gastroenterology and Hepatology, Department of Medicine, University of California-San Francisco, San Francisco, California. Electronic address: jin.ge@ucsf.edu.\', \'Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, California; Division of General Internal Medicine, Department of Medicine, University of California-San Francisco, San Francisco, California.\', \'Division of Gastroenterology and Hepatology, Department of Medicine, University of California-San Francisco, San Francisco, California.\']
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