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.
Vermaak WJ, Kotze JP, van der Merwe AM, Becker PJ, Ubbink JB, Barnard HC, Roux FG, Schoeman JJ, Strydom GL.Vermaak WJ, et al. Among authors: becker pj.S Afr Med J. 1991 Apr 6;79(7):367-71.S Afr Med J. 1991.PMID: 2014459
Ubbink JB, Vermaak WJ, Bennett JM, Becker PJ, van Staden DA, Bissbort S.Ubbink JB, et al. Among authors: becker pj.Klin Wochenschr. 1991 Aug 16;69(12):527-34. doi: 10.1007/BF01649290.Klin Wochenschr. 1991.PMID: 1921238
Bouwman H, Cooppan RM, Botha MJ, Becker PJ.Bouwman H, et al. Among authors: becker pj.S Afr Med J. 1991 Mar 16;79(6):326-9.S Afr Med J. 1991.PMID: 2017743