“…These studies have produced mixed results for weight and height gain, and it seems likely that some of this variation may be explained by differences across the trials in the foods provided to both the control and intervention groups. For example, control groups received food that was fortified with micronutrients (both Malawi studies) [10],[12] or enriched with fish powder (DRC) [11], which contrasts with the situation in Chad where the control group received unfortified staple foods. Furthermore, in the first Malawi study [10] (as in Chad), the LNS included dried skim milk powder as a key ingredient, whereas in the second Malawi study [11] the LNS did not include any milk and in the DRC [12] the amount of milk was about one-fifth of the amount in the LNS used in the other two studies.…”