Nieto-Fontarigo, Juan José http://orcid.org/0000-0002-4647-1508
Salgado, Francisco Javier http://orcid.org/0000-0003-4738-215X
San-José, María Esther
Cruz, María Jesús
Valdés, Luis
Pérez-Díaz, Amparo
Arias, Pilar
Nogueira, Montserrat
González-Barcala, Francisco Javier http://orcid.org/0000-0001-5847-4784
Article History
Received: 29 November 2018
Accepted: 17 April 2019
First Online: 17 May 2019
Competing Interests
: The authors declare no competing interests.