Text and Data Mining valid from 2020-01-09
Received: 28 October 2019
Accepted: 26 December 2019
First Online: 9 January 2020
Compliance with ethical standards
: The author declares no conflict of interest.
: The study protocol was approved by the Ethic Committee for Investigation with medicinal products of Galicia (Ref 2019/099) and has been performed in accordance with the ethical standards laid down in the Declaration of Helsinki and its later amendments.
: Due to the retrospective nature of the study, written informed consent was not required. This paper does not contain any individual person’s data in any form.