An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Astley CM, Todd JN, Salem RM, Vedantam S, Ebbeling CB, Huang PL, Ludwig DS, Hirschhorn JN, Florez JC.Astley CM, et al. Among authors: ludwig ds.Clin Chem. 2018 Jan;64(1):192-200. doi: 10.1373/clinchem.2017.280727.Clin Chem. 2018.PMID: 29295838Free PMC article.
Ebbeling CB, Pawlak DB, Ludwig DS.Ebbeling CB, et al. Among authors: ludwig ds.Lancet. 2002 Aug 10;360(9331):473-82. doi: 10.1016/S0140-6736(02)09678-2.Lancet. 2002.PMID: 12241736Review.