1. St Vincent’s Hospital, Melbourne, Fitzroy, VIC, Australia
2. University of Melbourne, Fitzroy, VIC, Australia
3. Department of Neurology, Mayo Clinic, Rochester, MN, USA
4. Department of Neurology, McKnight Brain Institute, University of Florida, Gainesville, FL, USA
5. Department of Anaesthesia, Center of Head and Orthopaedics, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
6. Division of Geriatric Medicine and Gerontology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
7. Harvard Medical School, Brigham and Women’s Hospital, Boston, MA, USA
8. Neurologic Outcomes Research Group, Anesthesiology Department, Duke University Medical Center, Durham, NC, USA
9. Department of Anesthesiology and Critical Care, University of Pennsylvania School of Medicine, Philadelphia, PA, USA