1. Elliot GR, Eisengdorfer C. Stress and human health: analysis and implications of research. In: A study by the institute of medicine and the national academy of sciences. New York: Springer Verag; 1982.
2. Herberman RB. NK cells and other natural effector cells. New York: Academic; 1982.
3. Levy L. Psychosocial stress and disease: a conceptual model. In: Gunderson EK, Rahe RH, editors. Life stress and illness. Springfield: Thomas; 1974.
4. Herbert TB, Cohen S. Depression and immunity: a meta-analytic review. Psychol Bull. 1993;113:472–86.
5. Bartrop RW, Luckhurst E, Lazarus L. Depressed lymphocyte function after bereavement. Lancet. 1977;1:834–6.