Date	Event	Description
17 December 2012	New citation required but conclusions have not changed	New authorship. A repeat search on October 31, 2012 identified four more studies, of which two were eligible for inclusion in this review update. One was excluded in view of lack of randomisation, one was excluded as it failed to meet the inclusion criteria.
31 October 2012	New search has been performed	This review updates the original review "Postnatal phenobarbital for the prevention of intraventricular haemorrhage in preterm infants", published in the Cochrane Library, Issue 4, 2007 (Whitelaw 2007).