1. A capsule history of pain management;Meldrum;JAMA,2003
2. Pain in men wounded in battle;Beecher;Ann Surg,1948
3. Measurement of subjective responses: quantitative effects of drugs;Beecher,1959
4. The powerful placebo;Beecher;J Am Med Assoc,1955
5. Bonica, world champion of pain;Liebeskind,1997