Funding for this research was provided by:
Consejo Nacional de Ciencia y Tecnología, Paraguay (fellowship number 241787, S0008-FONSEC SSA/IMSS/ISSSTE-26172)
Text and Data Mining valid from 2019-10-09
Received: 18 January 2019
Accepted: 11 September 2019
First Online: 9 October 2019
Ethics approval and consent to participate
: The present study was approved by the National Institute of Neurology and Neurosurgery Bioethics Committee. Written informed consent to participate was obtained from all subjects before enrollment in the study, from a relative or guardian for each patient and two witnesses, according to Mexican Code of Health Regulations.
: Not applicable.
: The authors declare no conflict of interest and no competing interests associated with the present study.