Date	Event	Description
2 February 2018	New search has been performed	We updated the search for eligible studies to February 2018. We identified 2 new randomised controlled trials including 123 children and included them in the review (Faerk 2001; Greer 1986). We included body mass index and measures of body composition in the growth parameters of the primary outcome. We also included new secondary outcome measures: long‐term measures of cardio‐metabolic health (such as insulin resistance, obesity, diabetes and hypertension). These outcomes were aligned with those of the Cochrane Review, Multi‐Nutrient Fortification of Human Milk for Preterm Infants (Brown 2016). We incorporated the GRADE approach to assess the quality of evidence.
23 January 2018	New citation required but conclusions have not changed	The main conclusions of the original review remained unchanged. The updated review identified that protein supplementation led to longer hospital stays compared with no supplementation.
3 November 2008	Amended	Converted to new review format.
13 December 1999	New citation required and conclusions have changed	Substantive amendment