- Correspondence to Dr Laura Medford-Davis, Robert Wood Johnson Foundation Clinical Scholars, Department of Emergency Medicine, University of Pennsylvania, 1310 Blockley Hall 423 Guardian Drive, Philadelphia, PA 19104-6021, USA;
- Received February 16, 2015
- Revised August 29, 2015
- Accepted September 5, 2015
- First published November 3, 2015.
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