RT Journal Article SR Electronic T1 Changing of the Guards JF American Society for Clinical Laboratory Science JO Clin Lab Sci FD American Society of Chemistry and Laboratory Science SP 4 OP 4 DO 10.29074/ascls.21.1.4 VO 21 IS 1 A1 David G Fowler YR 2008 UL http://hwmaint.clsjournal.ascls.org/content/21/1/4.abstract AB