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.
Wistokat-Wülfing A, Schmidt P, Darsow U, Ring J, Kapp A, Werfel T.Wistokat-Wülfing A, et al. Among authors: werfel t.Clin Exp Allergy. 1999 Apr;29(4):513-21. doi: 10.1046/j.1365-2222.1999.00510.x.Clin Exp Allergy. 1999.PMID: 10202366