Received: 23 April 2019
Revised: 28 May 2019
Accepted: 29 May 2019
First Online: 14 June 2019
Ethics approval and consent to participate
: Informed consent was obtained from each sample donor. All experimental procedures were carried out according to the Real Decreto 53/2013 (BOE, 34, 11370-11421, 2013) regarding animal research ethics. In accordance with the regulations of the University of Granada on the use of animals, all the authors consider that animals are creatures of great complexity and intrinsic value, and worthy of respect, so their use can only aim to advance scientific knowledge and improve the health of humans or animals. During the present work, attempts were made to replace in vivo experiments with in vitro experiments whenever possible, using the minimum number of animals that would allow statistically meaningful results to be obtained and scientific conclusions to be drawn with confidence. This study was approved by the Research and Ethics Committee of the University of Granada.
: Not applicable
: The authors declare that they have no competing interests.