@misc{1136966,
  author = {Mary Bedner and Katrice A. Lippa and Susan S.-C. Tai},
  title = {NIST/NIH Vitamin D Metabolites Quality Assurance Program Report of Participant Results: Summer 2011 Comparability Study (Exercise 4):},
  year = {2012},
  month = {2012-12-01 05:12:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.IR.7893},
  language = {en},
}