1. P. E. Baldry, Acupuncture, Trigger Points and Musculoskeletal Pain, 2nd edn. (Churchill Livingstone, 1993) pp. 120–124.
2. M. F. Bear, B. W. Connors and M. A. Paradiso, The Somatic Sensory System. Neuroscience Exploring the Brain (Lippincott Williams & Wilkins, Philadelphia, 2007) pp. 387–422.
3. The role of human interleukin-6 in B-cell isotype regulation and differentiation
4. J. Bonica, The Management of Pain, ed. J. Bonica (Lea and Febiger, Philadelphia, 1990) pp. 96–120.