- Correspondence to Dr Hunter Groninger, Section of Palliative Care, Department of Medicine, 110 Irving Street NW, Room 2A68, MedStar Washington Hospital Center, Washington DC, 20010, USA;
- Received 26 March 2017
- Revision received 4 April 2017
- Accepted 5 April 2017
- Published online 20 April 2017.
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