Antifactor Xa activity in intensive care patients receiving thromboembolic prophylaxis with standard dose enoxaparin. - Mayr,A.J.; Dünser,M.; Jochberger,S.; Fries,D.; Klingler,A.; Joannidis,M.; Hasibeder,W.; Schobersberger,W. (Thromb Res, 2002)