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.
Leebeek FW, Kluft C, Knot EA, Los P, Cohen AF, Six AJ.Leebeek FW, et al.J Am Coll Cardiol. 1990 May;15(6):1212-20. doi: 10.1016/s0735-1097(10)80003-8.J Am Coll Cardiol. 1990.PMID: 1691750Free article.
Leebeek FW, Kluft C, Knot EA, de Maat MP, Wilson JH.Leebeek FW, et al.Gastroenterology. 1991 Nov;101(5):1382-90. doi: 10.1016/0016-5085(91)90092-y.Gastroenterology. 1991.PMID: 1718809