Date	Event	Description
31 July 2011	New search has been performed	Search update. The updated search identified two new reports; Ignatova 2007 has been excluded, Trossarelli 1984 has been included. Two trials previously awaiting assessment (Botta 1986; Mello 2005) have been included. This updated review now includes five studies (involving 153 women and 154 pregnancies), the results and conclusions have not changed. Division and names of outcomes have been changed from main and additional, to primary and secondary. Primary outcomes are now macrosomia for the infant and operative birth for the mother. Economic evaluation has been added as a secondary outcome.
1 September 2008	Amended	Converted to new review format.