Vorwald, Peter
Restrepo Núñez, Rafael Mauricio http://orcid.org/0000-0003-1421-677X
Salcedo Cabañas, Gabriel
Posada González, Maria
Article History
First Online: 6 February 2019
Compliance with Ethical Standards
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: The authors declare that they have no conflict of interest.