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.
Peña A, Johannisson A, Linde-Forsberg C.Peña A, et al.Theriogenology. 1999 Oct 15;52(6):965-80. doi: 10.1016/s0093-691x(99)00186-7.Theriogenology. 1999.PMID: 10735104
Peña A, Linde-Forsberg CB.Peña A, et al.Theriogenology. 2000 Sep 15;54(5):703-18. doi: 10.1016/s0093-691x(00)00384-8.Theriogenology. 2000.PMID: 11101032