About the Authors
- Hao Liu
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Affiliations Geriatric Research Educational and Clinical Center, V.A. Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, United States of America, Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
- Marie E. Rose
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Affiliations Geriatric Research Educational and Clinical Center, V.A. Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, United States of America, Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
- Xiecheng Ma
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Affiliations Geriatric Research Educational and Clinical Center, V.A. Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, United States of America, Department of Neurosurgery, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America, Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- Sherman Culver
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Affiliations Geriatric Research Educational and Clinical Center, V.A. Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, United States of America, Department of Neurosurgery, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America, Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- C. Edward Dixon
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Affiliations Geriatric Research Educational and Clinical Center, V.A. Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, United States of America, Department of Neurosurgery, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America, Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- Steven H. Graham
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* E-mail: Steven.Graham@va.gov
Affiliations Geriatric Research Educational and Clinical Center, V.A. Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, United States of America, Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceptualization: HL SHG. Data curation: HL MER CED SHG. Formal analysis: MER. Funding acquisition: HL CED SHG. Investigation: HL MER XM SC. Methodology: CED. Project administration: HL MER XM SC CED SHG. Resources: CED SHG. Supervision: HL MER SC CED SHG. Validation: CED SHG. Visualization: HL MER SHG. Writing – original draft: HL MER SHG. Writing – review & editing: HL MER CED SHG.