- Correspondence to Dr Jennifer Prah Ruger, Medical Ethics and Health Policy, Perelman School of Medicine at the University of Pennsylvania, 3401 Market Street, Suite 320, Philadelphia, PA 19104-3319, USA;
- Received August 31, 2014
- Revised September 9, 2014
- Accepted October 3, 2014
- First published December 16, 2014.
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