id	keyword
aiua-12957	years
aiua-12957	anesthesia
aiua-12957	group
aiua-12957	patients
aiua-12957	spinal
aiua-12957	local
aiua-12957	age
aiua-12957	anesthesia group
aiua-12957	age group
aiua-12957	penile
aiua-12957	spinal anesthesia
aiua-12957	pain
aiua-12957	curvature