RT Journal Article SR Electronic T1 Purple urine bag syndrome JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 491 OP 491 DO 10.1503/cmaj.071604 VO 179 IS 5 A1 Che-Kim Tan MD A1 Ya-Ping Wu, RT A1 Hsing-Ying Wu, RT A1 Chih-Cheng Lai MD YR 2008 UL http://www.cmaj.ca/content/179/5/491.abstract