?:authorAffiliation
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[\'Department of General Practice (General Internal Medicine), Peking Union Medical College Hospital (PUMCH), Chinese Academy of Medical Science (CAMS) and Peking Union Medical College (PUMC), Beijing, 100730, China.\', \'Department of General Practice (General Internal Medicine), Peking Union Medical College Hospital (PUMCH), Chinese Academy of Medical Science (CAMS) and Peking Union Medical College (PUMC), Beijing, 100730, China. zxjpumch@126.com.\']
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