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Showing articles 0 to 2 of 2 Filter Applied: placebo (Click to remove) Pain II:New Approaches to Management Ann Neurol 9:101-106, Fields,H.L., 1981 Opiate Peptides Analgesia, & the Neuroendocrine System, Editorial, BMJ 1:741-742., , 1980 Showing articles 0 to 2 of 2