The effect of auricular acupuncture on fentanyl requirement during hip arthroplasty: a randomized controlled trial. Clin J Pain. 2011 Mar-Apr;27(3):262-7 Authors: Wetzel B, Pavlovic D, Kuse R, Gibb A, Merk H, Lehmann C, Wendt M, Usichenko TI Abstract OBJECTIVES: Although auricular (...)