Doggen C J M, Lemaitre R N, Smith N L, Heckbert S R, Psaty B M
Department of Epidemiology, Cardiovascular Health Research Unit, University of Washington, Seattle, Washington, USA.
J Thromb Haemost. 2004 May;2(5):700-1. doi: 10.1111/j.1538-7836.2004.00696.x.