normal age

【Results】 The preterm low birth weight babies had the catch-up growth before the corrected age of 2 years old and no such shift was found between 40 weeks～1 month and 6～8 months.

【结果】早产低出生体重儿在2岁以内呈追赶生长(纠正年龄40周~1月、6~8个月除外)。