Funding for this research was provided by:
Canadian Society of Otolaryngology (4258427752023306)
Received: 3 December 2019
Accepted: 28 May 2020
First Online: 20 July 2020
Ethics approval and consent to participate
: Research ethics board approval was obtained from St Michaels Hospital, Toronto, Canada which is fully affiliated with the University of Toronto. Since this was a retrospective review, consent was deemed not applicable by the research ethics board.
: There are no competing interests from the authors.