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.
Singer MM, Tjeerdema RS.Singer MM, et al. Among authors: tjeerdema rs.Rev Environ Contam Toxicol. 1993;133:95-149. doi: 10.1007/978-1-4613-9529-4_3.Rev Environ Contam Toxicol. 1993.PMID: 8234943Review.
Larkin DJ, Tjeerdema RS.Larkin DJ, et al. Among authors: tjeerdema rs.Rev Environ Contam Toxicol. 2000;166:49-82.Rev Environ Contam Toxicol. 2000.PMID: 10868076Review.