id	keyword
bjos-8640834	stress
bjos-8640834	oral
bjos-8640834	nurses
bjos-8640834	portuguese
bjos-8640834	level
bjos-8640834	table
bjos-8640834	study
bjos-8640834	hospital
bjos-8640834	symptoms
bjos-8640834	total
bjos-8640834	association