Vázquez-Nava, Francisco http://orcid.org/0000-0002-0845-3501
Vázquez-Rodríguez, Eliza M.
Vázquez-Rodríguez, Carlos F.
Ortega Betancourt, Nancy V.
Article History
First Online: 18 July 2019
Compliance with Ethical Standards
:
: The authors declare that they have no competing interests.
: The study was approved by the Ethics Committee of the Faculty of Medicine of Tampico, Autonomous University of Tamaulipas. 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 Declaration of Helsinki and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.