About the Authors

Zia Choudhry

Affiliations Department of Human Genetics, McGill University, Montreal, Canada, Douglas Mental Health University Institute, Montreal, Canada

Sarojini M. Sengupta

Affiliations Department of Psychiatry, McGill University, Montreal, Canada, Douglas Mental Health University Institute, Montreal, Canada

Natalie Grizenko

Contributed equally to this work with: Natalie Grizenko, Ridha Joober

Affiliations Department of Psychiatry, McGill University, Montreal, Canada, Douglas Mental Health University Institute, Montreal, Canada

William J. Harvey

Affiliations Department of Kinesiology and Physical Education, McGill University, Montreal, Canada, Douglas Mental Health University Institute, Montreal, Canada

Marie-Ève Fortier

Affiliations Department of Human Genetics, McGill University, Montreal, Canada, Douglas Mental Health University Institute, Montreal, Canada

Norbert Schmitz

Affiliations Department of Psychiatry, McGill University, Montreal, Canada, Douglas Mental Health University Institute, Montreal, Canada

Ridha Joober

Contributed equally to this work with: Natalie Grizenko, Ridha Joober

ridha.joober@douglas.mcgill.ca

Affiliations Department of Human Genetics, McGill University, Montreal, Canada, Department of Psychiatry, McGill University, Montreal, Canada, Douglas Mental Health University Institute, Montreal, Canada

Competing Interests

Dr. Ridha Joober sits on the advisory boards and speakers' bureaus of Pfizer Canada and Janssen Ortho Canada; he has received grant funding from them and from AstraZeneca. He has received honoraria from Janssen Ortho Canada for CME presentations and royalties for Henry Stewart talks. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceptual Statistical Input: NS. Conceived and designed the experiments: RJ NG. Performed the experiments: ZC MEF SS WJH. Analyzed the data: ZC. Wrote the paper: ZC RJ.