id	keyword
bjos-8642321	disease
bjos-8642321	periodontal
bjos-8642321	patients
bjos-8642321	renal
bjos-8642321	periodontitis
bjos-8642321	group
bjos-8642321	study
bjos-8642321	oral
bjos-8642321	status
bjos-8642321	case
bjos-8642321	prevalence
bjos-8642321	inflammation