Commentary: The Ruptured Arteriovenous Malformation Grading Scale (RAGS): An Extension of the Hunt and Hess Scale to Predict Clinical Outcome for Patients With Ruptured Brain Arteriovenous Malformations

Correspondence: Michael T. Lawton, MD, Department of Neurosurgery, Barrow Neurological Institute, 2910 N. Third Avenue, Phoenix, AZ 85013, USA. Email: [email protected]