Funding for this research was provided by:
Instituto de Salud Carlos III (PI17/01606, RD16/0012/0014, RD16/0012/0011, RD16/0012/0012)
Ministerio de Educación, Cultura y Deporte (FPU15/03434)
Consellería de Cultura, Educación e Ordenación Universitaria, Xunta de Galicia
Received: 31 May 2019
Accepted: 2 December 2019
First Online: 11 December 2019
Ethics approval and consent to participate
: The EA clinic and the sample collections were approved by the La Paz University Hospital Ethics Committee and the Ethics Committee for Clinical Research of Hospital Universitario La Princesa (Ref. PI-518). The study was approved by the Autonomous Research Ethics Committee of Galicia (Ref. 2014/387). All participating subjects gave their written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.