Costa, José C. S. https://orcid.org/0000-0002-7134-8675
Mendes, Adélio https://orcid.org/0000-0003-2472-3265
Santos, Luís M. N. B. F. https://orcid.org/0000-0003-3040-0358
Article History
Received: 24 April 2018
Accepted: 4 June 2018
First Online: 12 June 2018
Compliance with ethical standards
:
: The authors declare that they have no competing financial interest.