Esteban, Cristóbal
Castro-Acosta, Ady
Alvarez-Martínez, Carlos Jose
Capelastegui, Alberto
López-Campos, José Luis
Pozo-Rodriguez, Francisco
Article History
Received: 3 August 2017
Accepted: 4 January 2018
First Online: 25 January 2018
Ethics approval and consent to participate
: The study was approved by Instituto de Salud Carlos III CEI PI 30_2011-v4 and by the Ethics Committees of every hospital involved in the study. All participants provided written informed consent.
: Not applicable
: The authors declare that they have no competing interests.
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