| Date | Event | Description |
|---|---|---|
| 20 February 2008 | New citation required and conclusions have changed | Substantive amendment. This review contains results from one new trial (Elder 2006) and further data from a previously included study (Knivsberg 2002). In addition, we have learned of an ongoing USA-based Phase I randomized, double-blind, placebo controlled, parallel assignment, safety/efficacy study, which is now within the references of this review. The study is anticipated to be completed in April 2008 |
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