- Correspondence to Dr Pedro Romero-Aroca Hospital Universtario Sant Joan, Avenida, Doctor, Josep Laporte 2, Reus 43204, Spain; ,
- Received 14 December 2016
- Revised 31 January 2017
- Accepted 10 February 2017
- Published in print 1 October 2017.
- Published online 26 September 2017.
- Published first 7 March 2017.
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