Funding for this research was provided by:
Fundação de Amparo à Pesquisa do Estado de São Paulo (2013/12006-3; 2014/19976-0; 2014/20341-0; 04/12133-6 and 2013/02162-8)
Received: 22 January 2019
Accepted: 18 February 2019
First Online: 4 March 2019
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This research was submitted to and approved by the HC/FMRP-USP Research Ethics Committee (CAAE n° 37,206,114.1.0000.5440) n°15,509/2016. All samples were obtained after receiving informed consent from all participants included in the study.
: Not applicable.
: The authors declare that they have no competing interests.
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