@misc{29151, author = {Mary Bedner and Katrice Lippa}, title = {NIST/NIH Vitamin D Metabolites Quality Assurance Program Report of Participant Results: Winter 2011 Exercise (Exercise 3)}, year = {2012}, month = {2012-12-21}, publisher = {NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NIST.IR.7892}, language = {en}, }