"low birth-weight" . . . "asymmetric IUGR" . "small for gestational age" . "small for their age" . . "small for gestational age (SGA)" . "D007230" . "impaired fetal growth" . "Small size at birth" . . "765" . "P07." . "P05." . "Small for gestational age" . "very low-birth-weight infants" . "764" . "," . "intrauterine growth restriction" . . "," . "Small for gestational age" . "Small for gestational age infants" . "underweight babies" . "underweight" . . "decreased birth weight" .