Intracranial Angioplasty:Experience and Complications
AJNR 18:1661-1668, Takis,C.,et al, 1997
Evaluation of Cerebrovascular Disease by Combined Extracranial & Transcranial Doppler Sonography In 1, 039 Patients
Stroke 18:1018-1024, Grolimund,P.,et al, 1987