González-Colunga, Karla J.
Lino-Silva, Leonardo S. http://orcid.org/0000-0002-7394-5123
Salcedo-Hernández, Rosa A.
Ruiz-García, Erika B.
Zepeda-Najar, César
Article History
First Online: 8 January 2019
Compliance with Ethical Standards
: This study was carried out following the guidelines from Helsinski declaration and was approved for the Etics in Investigation Review Board of our Institution. Due to the retrospective nature of the study informed consent was not required.
: The authors declare that they have no conflict of interest.