?:authorAffiliation
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[\'Department of Internal Medicine, Toyonaka Municipal Hospital, Toyonaka, Osaka, Japan.\', \'Department of Gastroenterology, Toyonaka Municipal Hospital, Toyonaka, Osaka, Japan.\', \'Department of Neurology, Toyonaka Municipal Hospital, Toyonaka, Osaka, Japan.\', \'Infection Control Office, Toyonaka Municipal Hospital, Toyonaka, Osaka, Japan.\']
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