TY  - RPRT
TI  - NIST/NIH Vitamin D Metabolites Quality Assurance Program Report of Participant Results: Summer 2011 Comparability Study (Exercise 4) 
AU  - Bedner, Mary
AU  - Lippa, Katrice A.
AU  - Tai, Susan S.-C.
PY  - 2012
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NIST IR 7893
DO  - 10.6028/NIST.IR.7893
ER  -