id	keyword
bam-7351	neostigmine
bam-7351	tramadol
bam-7351	group
bam-7351	pain
bam-7351	patients
bam-7351	surgery
bam-7351	placebo
bam-7351	hours
bam-7351	analgesia
bam-7351	lidocaine
bam-7351	duration