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Meta-Analysis
©Author(s) (or their employer(s)) 2026.
World J Clin Pediatr. Mar 9, 2026; 15(1): 116331
Published online Mar 9, 2026. doi: 10.5409/wjcp.v15.i1.116331
Figure 1
Figure 1 Graphical abstract. HRV: Heart rate variability; RMSSD: Root mean square of successive differences; SDNN: Standard deviation of normal-to-normal intervals.


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