1. Christou NV, Superina R, Broadhead M, Meakins JL. Postoperative depression of host resistance: determinants and effect of peripheral protein-sparing therapy. Surgery 1982;92:786–92.
2. Hjortso NC, Kehlet H. Influence of surgery, age and serum albumin on delayed hypersensitivity. Acta Chir Scand 1986;152:175–9.
3. Lennard TW, Shenton BK, Borzotta A,et al. The influence of surgical operations on components of the human immune system. Br J Surg 1985;72:771–6.
4. Nielsen HJ, Pedersen BK, Moesgaard F, Haahr PM, Kehlet H. Effect of ranitidine on postoperative suppression of natural killer cell activity and delayed hypersensitivity. Acta Chir Scand 1989;155:377–82.
5. Nielsen HJ, Moesgaard F, Kehlet H. Ranitidine for prevention of postoperative suppression of delayed hypersensitivity. Am J Surg 1989;157:291–4.