Updates are available Correction dated 2019-12-31

Article History

Received: 21 February 2019

Accepted: 9 October 2019

First Online: 24 October 2019

Change Date: 31 December 2019

Change Type: Correction

Change Details: In the original publication of this article [1], the authors want to add the following sentence in the Acknowledgement section

Ethics approval and consent to participate

: Ethics approval was obtained from the University of Alberta Research Ethics Board (REB), ID 0059817. Patient consent was deemed unnecessary by the REB due to retrospective design and large study population. All data were handled in accordance with the Alberta Health Information Act.

: Not Applicable.

: The authors declare that they have no competing interests.