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BACKGROUND Fibromyalgia often coexists and overlaps with other syndromes such as chronic fatigue, irritable bowel syndrome, and interstitial cystitis. Chronic stress has been implicated in the pathogenesis of these illnesses. The sympathetic nervous system is a key element of the stress response system. Sympathetic dysfunction has been reported in these(More)
Twenty-six faba bean (Vicia faba L.) populations, from five geographic areas and five varietal types have been assayed electrophoretically for variation in seven isozyme systems. Isozyme frequencies in populations, botanical varieties and geographical areas were submitted to the principal component analysis (PCA). Varieties grouped together showed no(More)
Autopsies have long been viewed as a biased source of information with regard to the mortality statistics that prevail in the hospital and community. This bias could be of either a demographic or clinical nature. Our objective was to define the autopsy characteristics from the National Cancer Institute of Mexico and determine how representative they were of(More)
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