Retraction to: Eur J Med Res (2021) 26:127 https://doi.org/10.1186/s40001-021-00592-w

The authors have retracted this article because it has been previously published by the same authors in a Chinese-language Journal [1]. Shen-Yun Fang, Ji-Lin Dai, Ji-Kang Min and Wei-Li Zhang have not responded to any correspondence from the editor/publisher about this retraction.