id	keyword
bam-12422	needles
bam-12422	puncture
bam-12422	indwelling
bam-12422	haemodialysis
bam-12422	intervention
bam-12422	group
bam-12422	control
bam-12422	access
bam-12422	patients
bam-12422	avf
bam-12422	days
bam-12422	vascular
bam-12422	time
bam-12422	blood