id	keyword
bjos-8660436	number
bjos-8660436	oral
bjos-8660436	care
bjos-8660436	patients
bjos-8660436	hai
bjos-8660436	doi
bjos-8660436	icu
bjos-8660436	study
bjos-8660436	pneumonia
bjos-8660436	hais
bjos-8660436	staff