Randomised Double-Blind Trial of Intravenous Fentanyl in Neuropathic Pain
Lancet 349:753-758, Dellemijn,P.L.I.&Vanneste,J.A.L., 1997
Cancer Pain:Management
Lancet 339:1031-1036, Hanks,G.W.&Justins,D.M., 1992
The Chronic Pain Syndrome:Misconceptions & Management
Ann Int Med 93:588-596, Reuler,J.B.,et al, 1980