Butler-Laporte, Guillaume
Cheng, Matthew P.
McDonald, Emily G.
Lee, Todd C.
Article History
Received: 3 January 2018
Accepted: 3 June 2018
First Online: 11 June 2018
Ethics approval
: Obtained from McGill University Health Center Research Ethics Board, which also deemed it unnecessary to obtain consent directly from patients as this was a retrospective study with no intervention.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.