Evidence-based emergency medicine/clinical question. How good is a negative cranial computed tomographic scan result in excluding subarachnoid hemorrhage?
Ann Emerg Med. 2000 Nov;36(5):507-16.
doi: 10.1067/mem.2000.109449.
1 Harvard School of Medicine and the Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA. jonathan_edlow@hms.harvard.edu