1. Acute and Tertiary Care, University of Pittsburgh School of Nursing, Pittsburgh, Pennsylvania
2. Neurosurgery & Acute and Tertiary Care, University of Pittsburgh School of Nursing and Department of Neurosurgery, Pittsburgh, Pennsylvania
3. Department of Neurological Surgery, Center Stroke Institute, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
4. Department of Neurologic Surgery, Boston University, Boston Medical Center, Boston, Massachusetts