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.
Das RK, Li Z, Perera H, Williamson JF.Das RK, et al. Among authors: williamson jf.Phys Med Biol. 1996 Jun;41(6):995-1006. doi: 10.1088/0031-9155/41/6/004.Phys Med Biol. 1996.PMID: 8794480
Williamson JF, Dempsey JF, Kirov AS, Monroe JI, Binns WR, Hedtjärn H.Williamson JF, et al.Phys Med Biol. 1999 Apr;44(4):857-71. doi: 10.1088/0031-9155/44/4/004.Phys Med Biol. 1999.PMID: 10232801
Hedtjärn H, Carlsson GA, Williamson JF.Hedtjärn H, et al. Among authors: williamson jf.Phys Med Biol. 2002 Feb 7;47(3):351-76. doi: 10.1088/0031-9155/47/3/301.Phys Med Biol. 2002.PMID: 11848117