5Goodman N W, Black AMS, Carter J A. Some ventilatory effects of propofol as sole aneastheic.Br J Aneasth, 1987,59 : 97.
6Wetzel B, Pavlovic D, Kuse R,et al. The effect of auricular acupuncture on fentanyl requirement during hip arthroplasty:a randomized controlled trial.Clin J Pain. 2011 Mar-Apr,27(3):262.