Figure 1. Progress of participants through the trial. *Of these participants, 15 returned for the 12-month visit and had 12-month data for the Physical Component Summary score, while the remaining 28 were considered to have had treatment failure for the primary outcome measure. Of these participants, 14 returned for the 12-month visit and had 12-month data for the Physical Component Summary score; treatment was considered to have failed in the remaining 35. GWVIs = Gulf War veterans' illnesses.

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