Iwakiri H, Nishihara N, Nagata O, et al: Individual effect-site concentrations of propofol are similar at loss of consciousness and at awakening. Anesth Analg 2005; 100: 107-10
Iwakiri H, Nagata O, Matsukawa T, et al: Effect-site concentration of propofol for recovery of consciousness is virtually independent of fentanyl effect-site concentration. Anesth Analg 2003; 96: 1651-5