RT Journal Article SR Electronic T1 LETTER TO THE EDITOR JF American Society for Clinical Laboratory Science JO Clin Lab Sci FD American Society of Chemistry and Laboratory Science SP 67 OP 67 DO 10.29074/ascls.16.2.67 VO 16 IS 2 A1 Ross, Barbara YR 2003 UL http://hwmaint.clsjournal.ascls.org/content/16/2/67.abstract AB