thirty-five studies were performed in 16 infants ( birthweight 0.75 to 3.1 kg ; gestational age , 26 to 42 wk ; mean +/- s.d . age at study , 26.5 +/- 15.7 days ; study weight , 1.78 +/- 0.5 kg ) .
C0005612
birthweight
C0005910
weight