Reason for withdrawal from publication
Reasons for withdrawal of review: This review is out of date and could be misleading and has therefore been withdrawn. New reviews now exist on The Cochrane Library for carbamazepine, gabapentin, lamotrigine and pregabalin. The review team is currently updating carbamazepine and lamotrigine. Other anticonvulsants such as clonazepam, phenytoin and sodium valproate will be incorporated into a new updated review.