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.
Maria Prieto J, Braca A, Morelli I, Barker A, Schaffner U.Maria Prieto J, et al. Among authors: schaffner u.Fitoterapia. 2004 Sep;75(6):533-8. doi: 10.1016/j.fitote.2004.03.014.Fitoterapia. 2004.PMID: 15351106
Sun Y, Collins AR, Schaffner U, Müller-Schärer H.Sun Y, et al. Among authors: schaffner u.Ecology. 2013 Oct;94(10):2124-30. doi: 10.1890/12-1910.1.Ecology. 2013.PMID: 24358696
Sun Y, Müller-Schärer H, Schaffner U.Sun Y, et al. Among authors: schaffner u.PLoS One. 2016 May 20;11(5):e0155712. doi: 10.1371/journal.pone.0155712. eCollection 2016.PLoS One. 2016.PMID: 27203687Free PMC article.