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.
Opperman E, le Roux T, Masenge A, Eikelboom RH.Opperman E, et al.Int J Audiol. 2021 Apr;60(4):246-254. doi: 10.1080/14992027.2020.1828633. Epub 2020 Oct 24.Int J Audiol. 2021.PMID: 33100038
Opperman E, Braun V, Clarke V, Rogers C.Opperman E, et al.J Sex Res. 2014;51(5):503-15. doi: 10.1080/00224499.2012.753982. Epub 2013 Apr 30.J Sex Res. 2014.PMID: 23631739
Opperman EA, Benson LE, Milhausen RR.Opperman EA, et al.J Sex Res. 2013;50(1):29-36. doi: 10.1080/00224499.2011.628423. Epub 2011 Nov 29.J Sex Res. 2013.PMID: 22126229
Du Plessis DH, Van Wyngaardt W, Gerdes GH, Opperman E.Du Plessis DH, et al. Among authors: opperman e.Onderstepoort J Vet Res. 1991 Mar;58(1):1-3.Onderstepoort J Vet Res. 1991.PMID: 2052314