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.
Ylikorkala O, Kauppila A, Kivinen S, Viinikka L.Ylikorkala O, et al.Obstet Gynecol. 1984 Jan;63(1):57-60.Obstet Gynecol. 1984.PMID: 6361642Clinical Trial.
Ylikorkala O, Kauppila A, Kivinen S, Viinikka L.Ylikorkala O, et al.Br Med J (Clin Res Ed). 1982 Jul 24;285(6337):249-51. doi: 10.1136/bmj.285.6337.249.Br Med J (Clin Res Ed). 1982.PMID: 6807435Free PMC article.Clinical Trial.
Kauppila A, Kivinen S, Ylikorkala O.Kauppila A, et al. Among authors: ylikorkala o.Lancet. 1981 May 30;1(8231):1175-7. doi: 10.1016/s0140-6736(81)92347-3.Lancet. 1981.PMID: 6112526Clinical Trial.
Kauppila A, Ylikorkala O.Kauppila A, et al. Among authors: ylikorkala o.Am J Obstet Gynecol. 1980 Oct 1;138(3):271-2. doi: 10.1016/0002-9378(80)90247-1.Am J Obstet Gynecol. 1980.PMID: 6448002