a newborn with light weight at birth
birth weight
出生体质量
新生儿体重
新生儿体质量
婴儿出生体重
出生时体重
初生重
出生体重
胎儿出生体质量
出生重
胎儿体重
Birth weight large for gestational age infants
birth weight to placental weight ratio
Body weight at 6 months of age
Extremely low birth weight
extremely low birth weight infant
extremely low birth weight infants
extremely low birth-weight
extremely low-birth-weight infant
extremely-low-birth-weight
extremely-low-birth-weight premature