RT Journal Article SR Electronic T1 Purple urine in a woman with chronic kidney disease JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 255 OP 256 DO 10.3949/ccjm.79a.11032 VO 79 IS 4 A1 Chen, Yi-Chun YR 2012 UL http://www.ccjm.org/content/79/4/255.abstract AB