Chronic kidney disease, hypovitaminosis D, and mortality in the United States.
Mehrotra R, Kermah DA, Salusky IB, Wolf MS, Thadhani RI, Chiu YW, Martins D, Adler SG, Norris KC. Chronic kidney disease, hypovitaminosis D, and mortality in the United States. Kidney Int. 2009 Nov; 76(9):977-83.