The results showed that the fatal diseases to those infants were RDS. severe congenital malformation,perinatal asphyxia, tetanus, intracranical hemorrhage and sclerema neonatorum in proper order.

• 表明对低出生体重儿危害大的疾病依次为RDS、严重先天畸形、围产期窒息、破伤风、颅内出血及硬肿症。