@inbook{3417951, author={Lance J. Lehmann and Zahid H. Bajwa}, editor={Warfield, Carol A. and Bajwa, Zahid H.}, title={Chapter 49. Fibromyalgia and Myofascial Pain}, booktitle={Principles & Practice of Pain Medicine, 2e}, publisher={The McGraw-Hill Companies}, address={New York, NY}, year={2004}, url={accessanesthesiology.mhmedical.com/content.aspx?aid=3417951} }