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Feeding characteristics of cystic fibrosis infants who were exclusively breastfed (ExBF) >1 mo. The standard formula contained 0.67 kcal/mL (20 kcal/oz), and the formula with high caloric density contained ≥0.74 kcal/mL (≥22 kcal/oz). MI, meconium ileus; NoMI-PI, no MI but pancreatic insufficient; PS, pancreatic sufficient.
