Erratum to: Clin Exp Nephrol DOI 10.1007/s10157-009-0256-5

The authors’ affiliations appeared incorrectly in the article cited above. The correct affiliations are as follows:

H. A. Omar · M. A. Alzahrani · A. A. A. Al bshabshe · A. Assiri · M. Shalaby · A. Dwedar

Department of Medicine, College of Medicine, King Khalid University and Asser Central Hospital, Abha, Kingdom of Saudi Arabia