Variability in CKD stage in outpatients followed in two large renal clinics: implications for CKD trials and the status of current knowledge of patterns of CKD to ESRD progression
1. Department of Nephrology, Mayo Clinic Health System, 1221 Whipple Street, Eau Claire, WI, 54702, USA 2. Department of Information Technology, Ntec Solutions LLC, 921 Dorbe Street, Eau Claire, WI, 54701, USA