Corrigendum: Lower serum insulin-like growth factor 2 level in patients with bipolar disorder is associated with the severity of manic symptoms during manic episodes

In the published article, an author name was incorrectly written as Yin Zhao. The correct spelling is Ying Zhao.

The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.

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