Table 1

20-55 year-old primary care referrals to a physical therapy and osteopathy clinic in Alicante, Spain between February and September 2005 with mechanical neck pain of at least 1 month duration, C3-C4 or C4-C5 intervertebral joint dysfunction, no contraindication to manipulation, fibromyalgia, previous whiplash injury, cervical spine surgery ... ................
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