Table 1.

Subjects’ characteristics. Data are presented as N (%) or the mean (minimum–maximum).

demographics	n = 6
gestational age (weeks)	38.0 (37.0–41.0)
birth weight (g)	3100 (2790–3960)
male	2 (33.3)
singleton	6 (100)
small-for-gestational-age (SGA) infant	1 (16.6)
birth by caesarean section	3 (50)
Apgar 1 min	7 (2–9)
Apgar 5 min	9 (7–10)
duration of hospitalization (days)	12 (5–31)
breast milk feeding during hospital stay	3 (50)
age at measurement (days)	9 (2–29)
weight at measurement (g)	2940 (2680–4060)