RT Journal Article SR Electronic T1 Glomerular filtration rate and initiation of dialysis JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 24 OP 25 DO 10.1503/cmaj.101636 VO 183 IS 1 A1 Vianda S. Stel A1 Kitty J. Jager YR 2011 UL http://www.cmaj.ca/content/183/1/24.abstract