| Date | Event | Description |
|---|---|---|
| 2 March 2009 | New search has been performed | Corrected stool volume SMD for Alam 2000, as pointed out in Peter Gotzsche's query (Sept 2006) |
| 21 February 2009 | New citation required and conclusions have changed | Substantive amendment |
| 21 February 2009 | New search has been performed | Converted to new review format. |