He Q, You C, Cheng Y. Letter: 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. Neurosurgery 2020 Oct 9. pii: 5920172. doi: 10.1093.
PMID: 33034648