id	keyword
bjos-8641885	defects
bjos-8641885	prp
bjos-8641885	months
bjos-8641885	periodontal
bjos-8641885	treatment
bjos-8641885	plasma
bjos-8641885	platelet
bjos-8641885	intrabony
bjos-8641885	oral
bjos-8641885	study
bjos-8641885	group
bjos-8641885	mean
bjos-8641885	baseline
bjos-8641885	cal