Zinc absorption from micronutrient powder is low but is not affected by iron in Kenyan infants.
Esamai F, Liechty E, Ikemeri J, Westcott J, Kemp J, Culbertson D, Miller LV, Hambidge KM, Krebs NF. Zinc absorption from micronutrient powder is low but is not affected by iron in Kenyan infants. Nutrients. 2014 Dec; 6(12):5636-51.