Correction to: Comparison of analgesic effect of oxycodone and morphine on patients with moderate and advanced cancer pain: a meta-analysis.

After publication of this article [1], the authors noted that the corresponding email address is incorrect.

Correction

After publication of this article [1], the authors noted that the corresponding email address is incorrect. The correct correspondence address is luguijun301@163.com. The correct correspondence address can also be seen below.