1. Simons DG, Travell JG, Simons LS: The Trigger Point Manual, vol 1, edn 2. Baltimore, MD: Williams & Wilkins; 1999. Most recent addition of a classic medical textbook that should be read and studied by physicians who treat muscular pain. Empiric and scientific evidence that support Travell and Simon’s concepts of character and causality of muscle pain is biased, but clinical observations and illustrations make this book a necessary clinical tool.
2. Wolfe F, Simons DG, Fricton J, et al.: The fibromyalgia and myofascial pain syndromes: a preliminary study of tender points and trigger points in persons with fibromyalgia, myofascial pain syndrome and no disease. J Rheumatol 1992, 19:944–951.
3. Gerwin RD, Shannon S, Hong C-Z, et al.: Inter-rater reliability in myofascial trigger point examination. Pain 1998, 69:65–73.
4. Bohr T: Problems with myofascial pain syndrome and fibromyalgia syndrome. Neurology 1996, 46:593–597.
5. Drewes AM, Jennum P: Epidemiology of myofascial pain, low back pain, morning stiffness and sleep-related complaints in the general population [abstract]. J Musculoskeletal Pain 1995, 3(suppl 1):68.