The role of placebo response in clinical headache evaluations.
D000700:Analgesics; D018712:Analgesics, Non-Narcotic / Q000628:therapy*; D058633:Antipyretics; D006261:Headache / Q000628:therapy*; D010919:Placebos / Q000628:therapy*
D000700:Analgesics; D018712:Analgesics, Non-Narcotic; D058633:Antipyretics; D010919:Placebos
ANALGESICS AND ANTIPYRETICS/therapy; HEADACHE/therapy; PLACEBOS/therapy