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Lemming, Dag; Sörensen, Jan; Graven-Nielsen, Thomas; Lauber, Rolf; Arendt-Nielsen, Lars; Gerdle, Björn (2007). Managing chronic whiplash associated pain with a combination of low-dose opioid (remifentanil) and NMDA-antagonist (ketamine). European journal of pain, 11(7), pp. 719-32. Oxford: Wiley-Blackwell 10.1016/j.ejpain.2006.11.002
