@misc{1135781, author = {Mary Bedner and Susan S.-C. Tai}, title = {NIST/NIH Vitamin D Metabolites Quality Assurance Program Report of Participant Results: Winter 2014 Comparability Study (Exercise 8):}, year = {2016}, month = {2016-09-01 04:09:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NIST.IR.8133}, language = {en}, }