RT Journal Article SR Electronic T1 Index to Volume 20, Numbers 1 Through 4 JF American Society for Clinical Laboratory Science JO Clin Lab Sci FD American Society of Chemistry and Laboratory Science SP 253 OP 257 DO 10.29074/ascls.20.4.253 VO 20 IS 4 YR 2007 UL http://hwmaint.clsjournal.ascls.org/content/20/4/253.abstract AB