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Weight gain patterns of the National Institute of Child Health and Human Development Neonatal Research Network (NICHD) weighted average 550 and 750 gram cohorts (green dash) [4]and this study’s 23–25 week infants (red dot), with the Fetal-Infant Growth Reference 2013 (3rd, 50th & 97th percentiles), which was based on a 6 country meta-analysis of intrauterine growth (22 to 40 weeks).
