Characteristics of the four groups of subjects.
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1HAZ: height-for-age z-score; WAZ: weight-for-age z-score; R50: resistance at 50 kHz; Z200: Impedance at 200 Hz.2Sex and prematurity adjusted.3Age, gender and weight adjusted.4*P0.05, ***P0.001, ns: non significant.
创建时间：
2015-12-02
