- Correspondence to Professor F Sterz, Department of Emergency Medicine, Medical University of Vienna, Waehringer Guertel 18–20/6D – 1090 Vienna, Austria;
- Received 20 July 2015
- Revised 30 September 2016
- Accepted 10 January 2017
- Published in print 1 May 2017.
- Published online 19 April 2017.
- Published first 17 February 2017.
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