IJCS | Volume 31, Nº2, March / April 2018

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Author contributions Conception and design of the research: Teixeira JAC, Nobrega ACL, Araujo DV. Acquisition of data: Teixeira JAC, Messias LR, Dias KP, Costa WLB, Cascon RM, Miranda SMR, Teixeira PS, Jorge JG. Analysis and interpretation of the data: Teixeira JAC, Messias LR, Dias KP, Costa WLB, Teixeira PS, Nobrega ACL, Araujo DV. Writing of the manuscript: Teixeira JAC, Teixeira PS, Jorge JG. Critical revision of the manuscript for intellectual content: Teixeira JAC, Nobrega ACL, Araujo DV. Bibliographic Survey: Teixeira JAC, Messias LR, Miranda SMR. Bibliographic Review: Costa WLB, Cascon RM. Potential Conflict of Interest No potential conflict of interest relevant to this article was reported. Sources of Funding There were no external funding sources for this study. Study Association This article is part of the thesis of associate professor submitted by José Antônio Caldas Teixeira, from Universidade Federal Fluminense. Ethics approval and consent to participate This article does not contain any studies with human participants or animals performed by any of the authors.