Jeff Berns is Professor of Medicine, Associate Dean of GME & Director of the Renal Fellowship Program at UPenn & President of NKF. He curates Paper of the Day, a daily paper selected from nephrologic literature to stimulate discussion and critical thinking on statistical methods and trends in nephrology. From his desk to you brain. Visit us at PennKidney.com or follow Jeff on Twitter @Jeff_Berns_POTD.