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Flowchart for the study showing the breakdown of what occurs during each visit per each group (active transcutaneous electrical nerve stimulation [TENS], placebo TENS, and no treatment). FIQR=Revised Fibromyalgia Impact Questionnaire, NRS=numeric rating scale, ACR=American College of Rheumatology, 6MWT=Six-Minute Walk Test, FTSTS=Five-Times-Sit-to-Stand Test, FRT=Functional Reach Test, PPT=pressure pain threshold, CPM=conditioned pain modulation.
