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.
Wardle DA, Hörnberg G, Zackrisson O, Kalela-Brundin M, Coomes DA.Wardle DA, et al.Science. 2003 May 9;300(5621):972-5. doi: 10.1126/science.1082709.Science. 2003.PMID: 12738863
Clemmensen KE, Bahr A, Ovaskainen O, Dahlberg A, Ekblad A, Wallander H, Stenlid J, Finlay RD, Wardle DA, Lindahl BD.Clemmensen KE, et al. Among authors: wardle da.Science. 2013 Mar 29;339(6127):1615-8. doi: 10.1126/science.1231923.Science. 2013.PMID: 23539604