Martín-Nares, Eduardo
Zuñiga-Tamayo, Diego
Hinojosa-Azaola, Andrea
Article History
Received: 8 June 2018
Revised: 5 July 2018
Accepted: 9 July 2018
First Online: 14 July 2018
Compliance with ethical standards
: Research was conducted in compliance with the Helsinki Declaration. Informed consent was not obtained due to the retrospective nature of the study and no need for approval by the local ethical committee was needed.
: None.
: The manuscript does not contain clinical studies or patient data.