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Relationship between HLS and postoperative change of BMI z‐scores. Correlation analyses investigating the relationship between the HLS and change of BMI z‐score (A) 12 months and (B) 30 months post‐surgery Pearson correlation r = 0.515, P = 0.0007 at 12 months and r = 0.447, P = 0.0062 at 30 months following surgery.
