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.
Barr H, Shepherd NA, Dix A, Roberts DJ, Tan WC, Krasner N.Barr H, et al. Among authors: shepherd na.Lancet. 1996 Aug 31;348(9027):584-5. doi: 10.1016/s0140-6736(96)03054-1.Lancet. 1996.PMID: 8774572
Tan WC, Fulljames C, Stone N, Dix AJ, Shepherd N, Roberts DJ, Brown SB, Krasner N, Barr H.Tan WC, et al.J Photochem Photobiol B. 1999 Nov-Dec;53(1-3):75-80. doi: 10.1016/s1011-1344(99)00129-3.J Photochem Photobiol B. 1999.PMID: 10672532Clinical Trial.