Date	Event	Description
3 November 2008	Amended	Converted to new review format.
26 April 2002	New citation required and conclusions have changed	Substantive amendment An initial literature search (English only) was undertaken in October 1994 in three databases: MEDLINE at NLM (1980 ‐ September 1994); EMBASE (1974 ‐ 1994) in DIALOG; and the Oxford Database of Perinatal Trials (ODPT) (Version 1.3, Disk issue 7, Spring 1992). A search by first author of any abstracts was done in the Science Citation Index to try and identify any corresponding full manuscripts published. None were identified. The literature search was updated in February 1997 by assessing a trials list supplied by the Cochrane Collaboration Neonatal Review Group and by searching in MEDLINE (September 1994 ‐ January 1997) using a similar strategy to the original search. EMBASE was not searched again as the original search in this database failed to identify any appropriate trials not identified by searching MEDLINE. The search was updated a third time in October 2001, searching in MEDLINE ["indomethacin AND infant AND (prophylactic OR prophylaxis OR prevention)"], and the Cochrane Controlled Trials Register, The Cochrane Library, Issue 3, 2001 ["indomethacin AND (infant OR newborn)"].