Finally, mindful of the importance of using limited resources to greatest efficiency, the strategy focuses on investing in the areas most likely to achieve maximum impact. As such, interventions are targeted at pregnant mothers and children up to the age of two years as the critical window of opportunity for reducing undernutrition and its adverse effects. (Lancet series on Maternal and Child Undernutrition). Furthermore, many of the interventions identified in this strategy correspond to those acknowledged by the Copenhagen Consensus 2008 as the most cost effective interventions for global development. This strategy has been developed through strong interagency collaboration, with.