| Literature DB >> 21502313 |
Michael Kleerekoper1, Rosemary L Schleicher, John Eisman, Roger Bouillon, Ravinder J Singh, Michael F Holick.
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Year: 2011 PMID: 21502313 DOI: 10.1373/clinchem.2010.154997
Source DB: PubMed Journal: Clin Chem ISSN: 0009-9147 Impact factor: 8.327