- Correspondence to Dr Selma Carlson, Division of Cardiology, University of Washington, 1959 Pacific St NE, Box 356422, Seattle WA, 98195, USA;
- Received 15 November 2016
- Revised 21 March 2017
- Accepted 26 March 2017
- Published in print 1 December 2017.
- Published online 15 November 2017.
- Published first 10 May 2017.
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