Arteriovenous fistulas (intracranial, in the spine, or on the face or extremities, but not in liver or lung)
arteriovenous fistulas (intracranial, in the spine, or on the face or extremities, but not in liver or lung)
Arteriovenous fistulas (intracranial, in the spine, or on the face or extremities, but not in liver or lung)
arteriovenous fistulas (intracranial, in the spine, or on the face or extremities, but not in liver or lung)