id	keyword
anesthj-49	acetaminophen
anesthj-49	cesarean
anesthj-49	pain
anesthj-49	delivery
anesthj-49	anesthesia
anesthj-49	study
anesthj-49	patients
anesthj-49	paracetamol
anesthj-49	morphine
anesthj-49	opioid
anesthj-49	analgesic