1 ) Bos MJ, Koudstaal PJ, Hofman A, et al : Decreased glomerular filtration rate is a risk factor for hemorrhagic but not for ischemic stroke : the Rot- terdam study. Stroke 38 : 3127-3132, 2007
3 ) Gage BF, Yan Y, Milligan PE, et al : Clinical classification schemes for predicting hemorrhage : Results from the National Registry of Atrial Fib- rillation (NRAF). Am Heart J 151: 713-719, 2006