Improved Cerebrovascular Patency Following Therapy in Patients with Sickle Cell Disease: Initial Results in 4 Patients Who Received HLA-Identical Hematopoietic Stem Cell Allografts
Ann Neurol 49:222-229, Steen,R.G.,et al, 2001
Cerebral Angiography Practices at US Teaching Hospitals
Stroke 28:1895-1897, Chaturvedi,S.,et al, 1997