Received: 7 June 2019
Accepted: 7 August 2019
First Online: 19 August 2019
Compliance with ethical standards
: All authors report no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Ethical Committee of the General University Hospital of Alicante (CEIm PI 2018/105) and with the 1964 Helsinki declaration. The study was not conducted with animals.
: The Ethics Committee approved an exception to the rules on informed consent because it was a retrospective study.