Date	Event	Description
29 October 2009	New citation required but conclusions have not changed	New authorship: Roger Soll, Eren Özek
29 October 2009	New search has been performed	This updates the review "Prophylactic synthetic surfactant for preventing morbidity and mortality in preterm infants" published in the Cochrane Database of Systematic Reviews, Issue 2, 1998 (Soll 1998a). No new trials identified in updated search March 2009. No change in conclusions.
27 February 2008	Amended	Converted to new review format.
26 January 1998	New citation required and conclusions have changed	Substantive amendment