Text and Data Mining valid from 2018-07-11
Received: 9 January 2018
Accepted: 18 June 2018
First Online: 11 July 2018
Ethics approval and consent to participate
: This study was performed according to the principles expressed in the Declaration of Helsinki. The study was approved by the Ethics and Research Committee from the Instituto Nacional de Ciencias Médicas y Nutrición with reference number 1485, and a written informed consent was obtained from all subjects.
: Not applicable.
: The authors declare that they have no competing interests.
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