Funding for this research was provided by:
Fundación Ramón Domínguez para la Investigación, el Desarrollo y la Innovación biosanitaria (ECOES)
Received: 30 July 2018
Accepted: 12 September 2018
First Online: 9 October 2018
Ethics approval and consent to participate
: The study has been approved by the Regional Ethics committee: <i>“Comité Territorial de Ética de Investigación de Santiago-Lugo”</i> with the committee’s reference number 2015/270, and have therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.
: Not applicable.
: The authors declare that they have no competing interests.
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