A 22-day-old male infant, the first child of non-consanguineous parents, who was delivered from a followed-up and normal pregnancy, and without alterations in analytical and echographic evaluation. He was born by cesarean section at 39 weeks, because the labor failed to progress, with Apgar score of 9 at 1 minute and of 10 at 5 minute, weighting 3,240g at birth without intercurrences in the neonatal period. The newborn was exclusively breastfed with adequate weight gain (with 22 days of life […]