| Date | Event | Description |
|---|---|---|
| 10 August 2009 | Review declared as stable | No new trials were identified |
| 5 May 2009 | New search has been performed | This review has now been updated. No new trials were identified. Risk of bias tables have been added and the trial has been formatted as per Cochrane guidelines. An earlier version of the review included acupuncture but at the time of updating the review was split into two reviews, one of TENS and one of acupuncture. |
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