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.
Jansen FH, van der Straaten HM, Roest M, Haas F, de Groot PG, Fijnheer R.Jansen FH, et al. Among authors: haas f.Haematologica. 2005 Apr;90(4):499-504.Haematologica. 2005.PMID: 15820946
Fijnheer R, Roest M, Haas FJ, De Groot PG, Derksen RH.Fijnheer R, et al. Among authors: haas fj.J Rheumatol. 1998 Sep;25(9):1737-42.J Rheumatol. 1998.PMID: 9733454