aDepartments of Anesthesiology & Perioperative Medicine and Biomedical & Molecular Sciences, Queen's University, Kingston, ON, Canada

bProvidence Care Hospital, Queen's University, Kingston, ON, Canada

cDepartments of Public Health Sciences and Mathematics and Statistics, and the Cancer Research Institute, Queen's University, Kingston, ON, Canada

dDepartment of Psychology, Queen's University, Kingston, ON, Canada

eDepartment of Internal Medicine (Section of Neurology), University of Manitoba, Health Sciences Centre, Winnipeg, MB, Canada. Jackson is now with the Department of Clinical Neurosciences (Section of Neurology), University of Calgary, Calgary, AB, Canada

fDepartments of Psychiatry and Psychology, Queen's University, Kingston, ON, Canada

*Corresponding author Address: Department of Anesthesiology, Queen's University, 76 Stuart St, Kingston, ON K7L 2V7, Canada. Fax: 613-548-1375. Tel.: +1-613-548-7827. E-mail address: [email protected] (I. Gilron).

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