From the Department of Anesthesia, University of British Columbia, British Columbia, Canada.
Accepted for publication April 2, 2018.
Conflicts of Interest: See Disclosures at the end of the article.
Reprints will not be available from the author.
Address correspondence to Angela Enright, MB, FRCPC, Department of Anesthesia, Royal Jubilee Hospital, Victoria, BC V8R1J8, Canada. Address e-mail to email@example.com.