Cranberry and enterocolitis in premature infants

INTERVENTION: 1. Receive a dose of 0.5 ml of the prepared speech in the Pharmacy Department as unidosis in opaque vials. Opaque nasogastric administration every 12 hours. 2. (Placebo) ‐ Receive a dose of 0.5 ml of the prepared speech in the Pharmacy Department as unidosis in opaque vials. Opaque nasogastric administration every 12 hours. CONDITION: Necrotising enterocolitis ; Pregnancy and Childbirth ; Necrotising enterocolitis of fetus and newborn PRIMARY OUTCOME: 1. Enterocolitis; 2. The follow‐up of each patient is 1 month; 3. The total test duration is 3 years SECONDARY OUTCOME: 1. Poliphenols in urine; 2. The follow‐up of each patient is 1 month; 3. The total test duration is 3 years INCLUSION CRITERIA: 1. Preterm infants less than 1800 g birth weight, either sex 2. Infants with gestational age less than 32 weeks (depending FUR)