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.
van der Grond J, Laven JS, Lock MT, te Velde ER, Mali WP.van der Grond J, et al. Among authors: lock mt.Fertil Steril. 1991 Dec;56(6):1136-42. doi: 10.1016/s0015-0282(16)54729-3.Fertil Steril. 1991.PMID: 1743334Free article.
de la Rosette JJ, de Vries JD, Lock MT, Debruyne FM.de la Rosette JJ, et al. Among authors: lock mt.J Urol. 1991 Jul;146(1):40-2. doi: 10.1016/s0022-5347(17)37709-1.J Urol. 1991.PMID: 2056602