Murillo, Oscar
Grau, Imma
Gomez-Junyent, Joan
Cabrera, Celina
Ribera, Alba
Tubau, Fe
Peña, Carmen
Ariza, Javier
Pallares, Roman
Article History
Received: 28 July 2017
Accepted: 27 January 2018
First Online: 2 February 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: The institutional review board approved this study and publication of the results. The need for informed consent was waived as the study analysed data retrospectively and the data were anonymized.