Funding for this research was provided by:
Canadian Institutes of Health Research (MOP119509, MOP133537)
Received: 15 October 2018
Accepted: 26 December 2018
First Online: 9 January 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest. All procedures performed in studies involving human participants were in accordance with the ethical standards of the Research Ethics Board of the Montreal Neurological Institute, McGill University, the ethics committee of the CHU Sainte-Justine Research Center, the ethics committee of the Institut de la Statistique du Quebec, and the 1964 Helsinki declaration and its later amendments. Informed consent was obtained from all individual participants included in the study. This article does not contain any studies with non-human animals performed by any of the authors.