Extended follow-up study of the effects of brief psychological procedures in migraine therapy.
D000328:Adult; D001676:Biofeedback, Psychology; D005500:Follow-Up Studies; D006801:Humans; D006990:Hypnosis / Q000379:methods; D008875:Middle Aged; D008881:Migraine Disorders / Q000628:therapy*; D012064:Relaxation Therapy