DarbĂ , Josep
Ascanio, Meritxell
Article History
First Online: 18 February 2019
Compliance with Ethical Standards
:
: No sources of funding were received for the conduct of this study or the preparation of this article.
: Josep DarbĂ and Meritxell Ascanio have no conflicts of interest that are directly relevant to the content of this article.
: All procedures in this study were in accordance with the 1964 Helsinki Declaration and its amendments. As this was a study of an anonymised database and had no influence on patient care, ethics committee approval was not required.
: As this was a study of an anonymised database and had no influence on patient care, no informed consent was required.