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Salemi, Souzan; Aeschlimann, Andre; Wollina, Uwe; Gay, Renate E; Michel, Beat A; Gay, Steffen; Sprott, Haiko (2007). Up-regulation of delta-opioid receptors and kappa-opioid receptors in the skin of fibromyalgia patients. Arthritis & rheumatism, 56(7), pp. 2464-6. Hoboken, N.J.: Wiley-Blackwell 10.1002/art.22735
