id	keyword
easat-7708	age
easat-7708	gingivitis
easat-7708	patients
easat-7708	vol
easat-7708	ccg
easat-7708	chg
easat-7708	children
easat-7708	group
easat-7708	gingival
easat-7708	index
easat-7708	adolescents
easat-7708	authors
easat-7708	blood