?:authorAffiliation
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[\'The Second Clinical School, Southern Medical University, Guangzhou, 510515, Guangdong, China.\', \'Department of Gastroenterology, Guangdong Provincial People\'s Hospital, Guangdong Academy of Medical Sciences, South China University of Technology, Guangzhou, 510080, Guangdong, China. Electronic address: shixuedai@hotmail.com.\']
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