Transesophageal Echocardiography in Patients with Focal Cerebral Ischemia of Unknown Cause
Stroke 27:691-694, Rauh,G.,et al, 1996
The Effect of Low-Dose Warfarin on the Risk of Stroke in Patients with Nonrheumatic Atrial Fibrillation
NEJM 323:1505-1511, 1556-15581990., Kistler,J.P.,et al, 1990