id	keyword
american_scientific_journal-7555	patients
american_scientific_journal-7555	journal
american_scientific_journal-7555	infections
american_scientific_journal-7555	vol
american_scientific_journal-7555	space
american_scientific_journal-7555	study
american_scientific_journal-7555	doi
american_scientific_journal-7555	mortality
american_scientific_journal-7555	surgery
american_scientific_journal-7555	age
american_scientific_journal-7555	hospital
american_scientific_journal-7555	spreading