PT - JOURNAL ARTICLE AU - David G Fowler TI - Changing of the Guards AID - 10.29074/ascls.21.1.4 DP - 2008 Jan 01 TA - American Society for Clinical Laboratory Science PG - 4--4 VI - 21 IP - 1 4099 - http://hwmaint.clsjournal.ascls.org/content/21/1/4.short 4100 - http://hwmaint.clsjournal.ascls.org/content/21/1/4.full SO - Clin Lab Sci2008 Jan 01; 21