Date	Event	Description
1 November 2012	New citation required and conclusions have changed	This review updates part of Peña‐Rosas 2009 to only evaluate the effects of oral daily iron supplementation regimens. The effects of intermittent iron supplementation regimens are evaluated in a separate review (Peña‐Rosas 2012a).
2 July 2012	New search has been performed	In this split review we updated the search and used the latest Cochrane methodological guidance. We included information on the health worker cadre and malaria setting. Specific changes to the previous version are described in the section Differences between protocol and review. Two new authors have contributed to this review.
16 June 2009	New search has been performed	Search updated. Ten new trials included (Cantlie 1971; Christian 2003 (C); Hemminki 1991a; Harvey 2007;Lee 2005; Meier 2003; Mukhopadhyay 2004; Siega‐Riz 2001; Ziaei 2007; Ziaei 2008). One trial included is now excluded (Ortega‐Soler 1998). Twenty‐seven new trials excluded.
16 June 2009	New citation required but conclusions have not changed	In this update, trials assessing the effect of iron or folic acid when given in combination with other micronutrients were included as long as both groups being compared in the daily regimens received the same other micronutrient interventions. This has resulted in four trials previously excluded now being included (Cantlie 1971; Christian 2003 (C); Hemminki 1991a; Siega‐Riz 2001).
20 October 2008	Feedback has been incorporated	Feedback from Elina Hemminki added with response from author.
15 April 2008	Amended	Converted to new review format.