- Correspondence to Dr William Martinez, Division of General Internal Medicine, Vanderbilt University Medical Center, 1215 Twenty-first Avenue South, 6000 Medical Center East, NT, Nashville, TN 37232-8300, USA;
- Received 10 November 2016
- Revised 3 April 2017
- Accepted 4 April 2017
- Published online 25 April 2017.
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