8Anand K J, Hickey PR. Pain and its effects in the human neonate and fetus. N Engl J Med, 1987, 21:1321-1329.
9Duncan HP, Cloote A, Weir PM, etal. Reducing stress responses in the pre-bypass phase of open heart surgery in infants and young children: a comparison of different fentanyl doses. Br J Anaesth, 2000,84: 556-564.
10Yaster M. The dose response of fentanyl in neonatal anesthesia. Anesthesiology, 1987, 66:433-435.
5Lankveld DP, Bull S, Van-Dijk P, et al. Ketamine inhibits LPS-induced turnout necrosis factor-alpha and interlenkin-6 in an equine macrophage cell line. Vet Res,2005, 36: 257-262.
6Shimaoka M, Iida T, Ohara A, et al. Ketamine inhibits nitric oxide production in mouse-activated macrophage-like cells. Br J Anaesth, 1996,77: 238-242.