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Ramon Ruiz-Navarro
Mirador de Montserrat, 6
08232 Viladecavalls – Spain
I declare that I am the author of this manuscript, I will attend to any
specific journal requirements that must be met and I agree with its
submission under your policy. This paper has not been published or
simultaneously submitted elsewhere for publication. It is not under
consideration at another journal.
Declarations of conflict of interest: None