4Anand KJ. Clineal importance of pain and stress in preterm neonates [J]. Biol Neonate, 1998, 73(1): 1-9.
5Anand KJ, Barton BA, Mcintosh N, et al. Analgesia and sedation in preterm neonates who require ventilatory support results from the NOPAIN trial. Neonatal Outcome and Prolonged Analgesia in Neonate [J]. Arch Pediatr Adolesc Med, 1999, 153(4) :331 - 338.
6Johnston CC, Sherrard A, Stevens B, et al. Do cry features relect pain intensity in preterm neonates? A preliminary study [J]. Biol Neonate, 1999, 76(2): 120-124.
7Lindn V, Wiklund U, Hakansson S. Heel lancing in term newborn infants: an evaluation of pain by frequency domain analysis of heart rate variability [J]. Pain, 1999, 80(1-2): 143 - 148.
8Blauer T, Gerstrmann D. A stimultaneous comparison of three neonatal pain scales during common NICU procedures [J]. Clin J Pain, 1998, 14(1): 39-47.
9Stevens B, Johnston C, Petryshen P, et al. Premature Infant Pain Profile: development and initial validation[J]. Clin J Pain,1996, 12(1): 13-22.
10Taddio A, Shennan AT, Stevens B, et al. Safety of lidocaineprilocaine cream in the treamaent of preterm neonates [J]. J Pediatr, 1995, 127(6): 1002-1005.