| Date | Event | Description |
|---|---|---|
| 4 May 2015 | New search has been performed | Searches rerun. One new study excluded and one study that was previously recorded as 'Ongoing' now recorded as an included study |
| 4 May 2015 | New citation required but conclusions have not changed | Searches rerun. One new study excluded and one study that was previously recorded as 'Ongoing' now recorded as an included study, with limited data available from ClinicalTrials.gov (comparison pentoxifylline vs PGE1). New author added to the review team. Conclusions not changed |
| 22 October 2008 | Amended | Converted to new review format |
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