Additional references

w1 Moerman DE. Cultural variations in the placebo effect: ulcers, anxiety, and blood pressure. Med Anthropol Q 2000;14:1-22.

w2 Fischbach R, Spiegel D. Recommendations for research on applying placebo effects in clinical practice. In: Guess H, Kleinman A, Kusek J, Engel LW, ed. The science of the placebo. London: BMJ Books, 2002:293-9.

w3 Goodwin JS, Goodwin JM. The tomato effect. Rejection of highly efficacious therapies. JAMA 1984;251:2387-90.

w4 Sobel DS. Rethinking medicine: improving health outcomes with cost-effective psychosocial interventions. Psychosom Med 1995;57:234-44.

w5 Bootzin RR, Caspi O. Explanatory mechanisms for plaacebo effects: cognition, personality and social learning. In: Guess H, Kleinman A, Kusek J, Engel LW, eds. The science of the placebo. London: BMJ Books, 2002:108-32.