Kshirsagar AV, Freburger JK, Ellis AR, Wang L, Winkelmayer WC, Brookhart MA. Am J Med. 2013 Jun;126(6):541.e1-541.e14. doi: 10.1016/j.amjmed. 2012.11.030. Epub 2013 Apr 15.
University of North Carolina Kidney Center, UNC School of Medicine, Chapel Hill, NC 27599-7155, EUA.