Correction to: BMC Cancer 21 (2021)

https://doi.org/10.1186/s12885-021-08875-5

Following publication of the original article [1], the authors identified an error in affiliation 1.

The correct affiliation 1 is:

Department of Ultrasound, the First Affiliated Hospital of USTC, Division of Life Science and Medicine, University of Science and Technology of China, No. 1, Tianehu Road, Hefei 230036, Anhui, China