Correction to: BMC Nephrol (2020) 21: 5

https://doi.org/10.1186/s12882-019-1670-x

Following publication of the original article [1], the authors would like to correct the affiliation number 2.

The incorrect affiliation currently reads:

2Urology research Center, Hassan Abad Sq., Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran

The correct affiliation should read:

2Urology Research Center, Tehran University of Medical Sciences, Tehran, Iran

The original article has been corrected.