id	keyword
bjos-8647094	ref
bjos-8647094	oral
bjos-8647094	cells
bjos-8647094	study
bjos-8647094	alcohol
bjos-8647094	mucosa
bjos-8647094	maturation
bjos-8647094	pattern
bjos-8647094	years
bjos-8647094	variables
bjos-8647094	factors
bjos-8647094	use