Minimal human data exist on actual liver vitamin A compared with blood biomarkers. One blood biomarker, the percent of total serum retinol (vitamin A) in the form of retinyl esters, has been suggested to diagnose hypervitaminosis A with cutoffs of 5% and 10%. In this study, investigators aim to
Background:
Fibromyalgia is a common, chronic pai n disorder that is recognized by the American College of Rheumatology as a distinct clinical entity (1). In addition to the core feature of long-term, body-wide "soft tissue" pain, patients often report co-morbid mental and physical symptoms,