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. 2023 Oct 31;183(1):371–378. doi: 10.1007/s00431-023-05297-2

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Fig. 2 — Serum UA level in midodrine hydrochloride-effective and -ineffective children with vasovagal syncope. The ordinate is the uric acid concentration. The abscissa is two groups. The level of serum UA was significantly lower in effective group than those in ineffective group (p = 0.004). UA: uric acid