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.
Esterhuizen TM, Hnizdo E, Rees D, Lalloo UG, Kielkowski D, van Schalkwyk EM, White N, Smith FC, Hoggins B, Curtis T.Esterhuizen TM, et al. Among authors: lalloo ug.S Afr Med J. 2001 Jun;91(6):502-8.S Afr Med J. 2001.PMID: 11455715
Randolph BW, Lalloo UG, Gouws E, Colvin MS.Randolph BW, et al. Among authors: lalloo ug.S Afr Med J. 1997 Mar;87(3):318-23.S Afr Med J. 1997.PMID: 9137346