7Westgard J O. Wiebe D A. Cholesterel operational specifications for assuring qualinty required by CLIA proficiency testing[J]. Clin Chem, 1991 ; 37 : 1938-1944.
8U. S. Deratment of Health and Human Services. Medicare,Medicaid and CLIA programs- Regulations implementing the Clinical Laboratory Improvementing of 1988 (CLIA)[J]. Final rule. Fed Regist, 1992.