Text and Data Mining valid from 2019-09-10
Received: 30 May 2019
Accepted: 17 August 2019
First Online: 10 September 2019
Compliance with ethical standards
: Authors have no disclosures or conflict of interest.
: Our work does not contain any studies with animals performed by any of the authors.
: All patients gave their informed consent to take part on the study which was approved by the ethics committee of the Hospital Universitario Virgen del Rocio, Sevilla.