title: Muscle biopsy findings of possible diagnostic importance in primary fibromyalgia (fibrositis, myofascial syndrome)
mesh_terms: D000328:Adult; D001706:Biopsy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009132:Muscles / Q000473:pathology*; D009209:Myofascial Pain Syndromes / Q000175:diagnosis* / Q000473:pathology