Haanpää ML, Backonja MM, Bennett MI, Bouhassira D, Cruccu G, Hansson PT et al. Assessment of neuropathic pain in primary care. American Journal of Medicine. 2009;122(10 Suppl):S13-21. doi: 10.1016/j.amjmed.2009.04.006
Jensen TS, Nikolajsen L. Smerter og smertebehandling. In Schaffalitzky de Muckadell OB, Haunsø S, Vilstrup H, editors, Medicinsk Kompendium. 17 ed. Vol. 1. København: Nyt Nordisk Forlag Arnold Busck. 2009. p. 163-172