A 2-month-old boy was born with body weight of 5100 g. The baby has jaundice, hoarse cry, umbilical hernia, and a delay in physical development. The liver is +2 cm, the spleen is not enlarged. The umbilical cord separation was delayed in the baby. In the blood: Hb – 120 g/L, erythrocytes – 4.5 · 1012/L, ESR – 3 mm/hour. Total serum bilirubin – 28 mcmol/L, indirect bilirubin – 20 mcmol/L, direct bilirubin – 8 mcmol/L. What disease is suspected first?