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.
Ramsey SD, Neil N, Sullivan SD, Perfetto E.Ramsey SD, et al. Among authors: sullivan sd.J Am Board Fam Pract. 1999 Mar-Apr;12(2):105-14. doi: 10.3122/jabfm.12.2.105.J Am Board Fam Pract. 1999.PMID: 10220232
Etzioni RD, Feuer EJ, Sullivan SD, Lin D, Hu C, Ramsey SD.Etzioni RD, et al. Among authors: sullivan sd.J Health Econ. 1999 Jun;18(3):365-80. doi: 10.1016/s0167-6296(98)00056-3.J Health Econ. 1999.PMID: 10537900
Ramsey SD, McIntosh M, Sullivan SD.Ramsey SD, et al. Among authors: sullivan sd.Annu Rev Public Health. 2001;22:129-41. doi: 10.1146/annurev.publhealth.22.1.129.Annu Rev Public Health. 2001.PMID: 11274515Review.