About the Authors

John A. Robertson

Affiliations Lawson Health Research Institute, St. Joseph's Health Care, London, Ontario, Canada, Techna Institute, University Health Network, Toronto, Ontario, Canada

Alex W. Thomas

Affiliation Lawson Health Research Institute, St. Joseph's Health Care, London, Ontario, Canada

Frank S. Prato

Affiliation Lawson Health Research Institute, St. Joseph's Health Care, London, Ontario, Canada

Mikael Johansson

Affiliation Department of Psychology, Lund University, Lund, Sweden

Henrietta Nittby

Henrietta.Nittby@med.lu.se

Affiliation Department of Neurosurgery, Lund University, BMC D10, SE-221 85, Lund, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HN MJ AT FP JR. Performed the experiments: HN MJ AT FP JR. Analyzed the data: HN MJ AT FP JR. Contributed reagents/materials/analysis tools: HN MJ AT FP JR. Wrote the paper: HN MJ AT FP JR.