Funding for this research was provided by:
Consejo Nacional de Ciencia y Tecnología (271928)
Received: 6 December 2017
Accepted: 21 January 2019
First Online: 1 February 2019
Ethics approval and consent to participate
: This work has been performed in accordance with the Declaration of Helsinki, with the approval of our local IRB (Comité de Etica en Investigación del Instituto Nacional de Cancerología) local approval number 012/052/OMI-CB 805/12. The informed consent was obtained in written format, signed by the patient, two impartial witnesses and the principal investigator. Further information and documentation to support this is available to the Editor on request.
: Not applicable.
: The authors declare that they have no competing interests.
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