- Correspondence to Dr David H Goldstein, Department of Anesthesiology and Perioperative Medicine, Queen's University, Kingston General Hospital, 76 Stuart St, Kingston, Ontario, Canada K7L 2V7;
- Received April 21, 2014
- Revised November 3, 2014
- Accepted November 9, 2014
- First published January 20, 2015.
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